A company is criticized because only 16 of 50 in executive-level positions are women. The company argues that the representation of women among their executive ranks could be better but statistically it’s at least as high as the national average of 35%. Do an appropriate hypothesis test to determine if the company’s claim is false at a significance level of 0.1.

Answers

Answer 1

Answer:

We can conclude that there is sufficient evidence to state that the companies claim is not false      

Step-by-step explanation:

From the question we are told that

    The  population proportion is  [tex]p = 0.35[/tex]

   The  level of significance is  [tex]\alpha = 0.10[/tex]

    The sample  size is  n  =  50

Generally the  sample proportion is mathematically represented as

     [tex]\r p = \frac{16}{50 }[/tex]

    [tex]\r p = 0.32[/tex]

The null hypothesis is  [tex]H_o : p\ge 0.35[/tex]

The  alternative  hypothesis is  [tex]H_a : p< 0.35[/tex]

Generally the standard error is evaluated as

      [tex]SE = \sqrt{ \frac{0.35 (1- 0.35 )}{ \sqrt{50 } } }[/tex]

      [tex]SE = 0.067[/tex]

So  

    The test statistics is  evaluated as

                [tex]t = \frac{\r p - p }{ SE }[/tex]

=>             [tex]t = \frac{0.32 - 0.35 }{ 0.067 }[/tex]

=>             [tex]t = -0.45[/tex]

The  p-value is obtained from the z-table  , the values is  

       [tex]P( Z < -0.45) = 0.32636[/tex]

From the calculation we see that

        [tex]p-value > \alpha[/tex] so we fail to reject the null hypothesis

Hence we can conclude that there is sufficient evidence to state that the companies claim is not false

     


Related Questions

For the statement​ below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. An amusement park claims that the mean daily attendence at the park is people. Write the claim as a mathematical statement. A. B. C. D. E. F. Choose the correct null and alternative hypotheses below. A. ​: ​: B. ​: ​: C. ​: ​: D. ​: ​: E. ​: ​: F. ​: ​: Identify which is the claim. A. The null hypothesis ​: is the claim B. The alternative hypothesis ​: is the claim C. The alternative hypothesis ​: is the claim D. The alternative hypothesis ​: is the claim. E. The null hypothesis ​: is the claim

Answers

The question is not complete, so i have attached it.

Answer:

A) Option B: μ ≤ 19,000

B) Option C:

H0: μ ≤ 19,000

Ha: μ > 19,000

C) Option D: The null hypothesis H0: μ ≤ 19,000 is the claim

Step-by-step explanation:

A) From the question, we are told that an amusement park claims that the mean daily attendence at the park is at most 19,000 people.

Now, since it's at most 19000 people, it means that they are either 19000 or less. So the claim is;

μ ≤ 19,000 which is option B

B) Now, the claim is usually the null hypothesis. Thus, the null hypothesis is;

H0: μ ≤ 19,000

While the alternative hypothesis which states the opposite of the claim is;

Ha: μ > 19,000

So, option C is the correct answer

C) The claim is μ ≤ 19,000

Now, this also happens to be the null hypothesis.

Thus, the null hypothesis H0: μ ≤ 19,000 is the claim.

So option D is correct.

A 12 foot board is cut so that one piece is 5 times as long as the other. Find the length of each piece.

Answers

Answer:

2 and 10

Step-by-step explanation:

Let x be length of the small piece and y the length of the big one.

● y = 5x

Since the big piece is 5 times longer than the short one.

The total length is 12 ft

● y + x = 12

● 5x + x = 12

● 6x = 12

Divide both sides by 6

● 6x/6 = 12/6

● x = 2

So the length of the two pieces are 2 ft and 10 ft (5×2)

The length of each piece is 2 units and 10 units.

How to know how many times a number is to another ?

To know how times a number is to another just divide the larger number to the smaller number.

According to the given question a 12 foot board is cut so that one piece is 5 times as long as the other.

Assuming one piece to be x and the other to be 5x.

∴ x + 5x = 12

   6x = 12

     x = 2.

So, one piece is of 2 units and other piece is of 5(2) = 10 units.

To confirm that one piece is of 5 times of the other we divide the larger piece by the smaller piece which is 10/2 = 5.

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i need help can someone help me please

Answers

Answer:

a. x=80

b. x=30

Step-by-step explanation:

Use the exterior angle theorem: as shown in the picture

# a

25+x=105

     x=80

#b

2x+(3x+2)=152

       5x+2=152

          5x=150

            x=30

In 2007, the first generation of the i-phone sold for $499. The average cost of an i-phone today is $999. At a press conference just outside a telephone museum in Cle Elum, WA, the CEO of Apple, Tim Cook, stated that the rise in cost is purely due to inflation. Use the Consumer Price Index to either verify or falsify Cooks’s statement. Is he wrong?

Answers

Answer: the statement made by Tim Cook is TRUE

Step-by-step explanation:

Given that;

in 2007 cost of 1st gen iphone = $499 (base year price)

cost of iphone today = $999 (current year price)

Using the Consumer Price Index

the Consumer Price Index = (cost pf product in current years/cost of product base year) × 100

we substitute

CPI  = (999/499) × 100

CPI  = 200.2004

so the CPI is 100.2004% higher in the current year than in the base year

Checking the inflation rate

IR = (( CPI this year- CPI last year)/CPI last year) × 100

CPI last year (base year) = 100

CPI current year is = 100.2004

so

IR = (( 100.2004 - 100)/100) × 100

IR = 0.002004 × 100

IR = 0.2004%

THEREFORE the statement made by Tim Cook is TRUE

Trans wants to buy a bicycle that costs $192. He plans to save $6 each week . How many weeks will it take him to save enough money ?

Answers

Answer:

32 weeks

Step-by-step explanation:

Total amount = 192

Each week he saves = 6

Number of weeks = x

=> 6x = 192

=> 6x/6 = 192/6

=> x = 32

It will take 32 weeks for him to buy the bicycle.

6x=2x+44 solve for x

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 11}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{6x = 2x + 44}[/tex]

Move 2x to left hand side and change it's sign

⇒[tex] \sf{6x - 2x = 44}[/tex]

Collect like terms

⇒[tex] \sf{4x = 44}[/tex]

Divide both sides of the equation by 4

⇒[tex] \sf{ \frac{4x}{4} = \frac{44}{4} }[/tex]

Calculate

⇒[tex] \sf{x = 11}[/tex]

Hope I helped!

Best regards!!

11x because you subtract 2x from each side, then your left with 4x=44, the 44 divided by 4 is 11

Bill is paid a monthly salary of $7200. What is his Medicare tax withholding for January?

Answers

-Taxable wages & tips subject to Additional Medicare Tax withholding Total Advances Received From Filing Form(s) 7200 for the Quarter · 13g. Your Form 941 is due by the last day of the month that follows the end of the quarter

Step-by-step explanation:

Name the sets of number to which each number belongs.
25/11
ON, R(natural, real numbers
O Q(rational numbers)
Q, R (rational, real numbers)
O W, R (whole, real numbers)

Answers

The correct answer is C. Q, R (rational, real numbers)

Explanation:

The number [tex]\frac{25}{11}[/tex] is a fraction, which means it represents proportions of a whole. This number can be classified as rational, which is represented by the letter Q because this category of numbers includes those numbers that can be represented as a fraction and the number provided is naturally a fraction. Moreover, this number is also a real number, which is a broad category of numbers represented by the letter R that includes rational numbers such as fractions. This means this number is rational and because of this, it is also real.

On the other hand, this number is not natural because this includes regular numbers such as 3, 43, or 3947 but not fractions, and it is not a whole number because a fraction does not represent a whole number but just a proportion.

In the last 10 years, the population of Indonesia has grown at a rate of 1.12% per year to 258,316,051. If this rate continues, what will be the population in 10 more years? Round your answer to the nearest whole number.

Answers

Answer:

288750006

Step-by-step explanation:

Growth rate:

1.12% or 1.0112 times

Current population:

258,316,051

Predicted population after 10 years:

258,316,051*(1.0112)^10 = 288,750,006.168≈ 288,750,006 rounded

Answer:288,929,825

Step-by-step explanation:

This is the right answer.

Lynn invites some friends for lunch she needs to cater for 24 people. She decides to make pancakes. How many milk does Lynn need to use?

Answers

Answer: 900ml

Step-by-step explanation:

Recipe serves 4

Invited guests is 24 which is 6 x the recipe

6 x 150ml = 900ml

A quantity of (24xy) liters amount of milk is needed to cater 24 peoples.

What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.

We have Lynn needs to cater for 24 people.

Assume that she intents to make [x] pancakes for each individual. And, in order to make 1 pancake, [y] liters of milk is needed. So, for a total of 24 people, she will make (24x) pancakes, that will need -

A{milk} = 24xy

Therefore, a quantity of (24xy) liters amount of milk is needed to cater 24 peoples.

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Explain the error in simplifying the following

Answers

Answer:

1/3

Step-by-step explanation:

When simplifying the expression and x - 2 is eliminated there will be 1/3 left not 3

Every week, you spend $15.35 on coffee. There are 52 weeks in a year. How much money do you spend on coffee in a year?

Answers

Answer:

$798.20

Step-by-step explanation:

15.35 × 52 = 798.20

A dishwasher is priced at $635.50. There is an 8% sales tax rate. What is
the sales tax for the dishwasher in dollars and cents?
i need this answer right away!!!

Answers

To get the sales tax in dollars you first need to convert the percentage to decimal, which would 8% to 0.08. You then multiply the price of the dishwasher by your decimal percentage, 635.50 x 0.08 which would be $50.84

Evaluate 1 1/3 + 2 2/5

Answers

Answer:

3 11/15

Step-by-step explanation:

Answer:

3 11/15

Step-by-step explanation:

the 1/3 and 2/5 cannot be added properly, so we must make the denominator the same for both sides. So we make it fifteen.

The new equation is: 1 5/15 + 2 6/15.

1 5/15 + 2 6/15 = 3 11/15.

hope this helps :)


The ratio of Ali's mass to John's mass is 6:5. The ratio of John's muss
to William's mass is 2: 3. Find the ratio of Ali's mass to William's mass.
(1) 1:2
(2) 2:1
(3) 4:5
(4) 5:4

Answers

Step-by-step explanation:

The ratio of Ali mass to Williams mass is

6 : 3

= 2 : 1

Option 2 is the correct answer

Which of the following fall(s) at a z-score of 0.0 in a normal distribution? Mean Median Mode Mean, media and mode

Answers

Answer: Median Mode Mean

Step-by-step explanation:

A normal distribution a symmetric distribution where most of the values lies around the central peak where Mean, median mode all lies together and the value of z=0 (as z-value given the distance of data values from mean with respect to the standard deviation).

i.e.  Z-score of 0 has 50% of the area to the left and 50% area to the right.

Hence, at a z-score of 0.0 in a normal distribution Mean, Median and Mode all fall together.

I understand the homework, but question 9. Could someone please help? This assignment is due on Friday (8/21/2020)

Answers

Answer:

I think B or C I'm not sure but I hope this helps!

Step-by-step explanation:

how to write 32 as well
exponential form

Answers

Answer:

2^5

Step-by-step explanation:

2^5 = 2 x 2 x 2 x 2 x 2 = 32

Step-by-step explanation:

2x2x2x2 now that is the exact way to solve it mark me as a brilliantis

Estimate by rounding the divisor to the nearest tens place and the dividend to the nearest
compatible number. Then find the quotient.
Enter the remainder, if any, as a fraction in simplest form.
59 ) 5,613
The estimate is?
The quotient is?

Answers

Answer:

Estimate: 90

Quotient: 95

Remainder: 8/59

Step-by-step explanation:

Prove the identity (sin3A+sinA)/2sin2A= cosA​

Answers

Step-by-step explanation:

[tex] \frac{ \sin(3A) + \sin(A) }{2 \sin(2A) } [/tex]

Using the trigonometric identity

[tex] \sin(x) + \sin(y) = 2 \sin( \frac{x + y}{2} ) \cos( \frac{x - y}{2} ) [/tex]

Rewrite the expression

We have

[tex] \frac{2 \sin(2A) \cos(A) }{2 \sin(2A) } [/tex]

Reduce the fraction with 2

That's

[tex] \frac{ \sin(2A) \cos(A) }{ \sin(2A) } [/tex]

Reduce the fraction with sin 2A

We have the final answer as

cos A

As proven

Hope this helps you

4) Martin compares the prices of paper towels. A 3-roll package is priced at $2.89. A single
rollis priced at $89. Based on price alone, which is the better buy?

Answers

Answer:

assuming prices are correctly shown: 3-roll packageassuming a typo: single rolls.

Step-by-step explanation:

If single rolls are indeed priced at $89 each, the 3-roll package is a much better buy.

We suspect that the single rolls are priced at $0.89 each, which means you can buy 3 of them for less than $2.70. At this price, single rolls are a better buy.

Can the following be assumed from a diagram? The measures of angles

Answers

It also means that any angle that is not marked could be acute, right, or obtuse. For example, if this diagram appears without further comment

Julio wants to purchase a truck. The purchase price of the truck is $ 38 , 000.00 The dealership will allow him to pay cash or finance the truck for a down payment of $ 5 , 000.00 and 60 monthly payments of $ 750.00. Julio chooses to finance the truck.

Answers

Answer:

88,000

Step-by-step explanation:

If the down payment is $5,000and the monthly payment is $750. Then the amount of the truck through finance is $50,000.

What is finance?

The big-scale money management, particularly by governments or huge corporations.

Julio wants to purchase a truck.

The purchase price of the truck is $ 38,000.00.

The dealership will allow him to pay cash or finance the truck for a down payment of $ 5,000.00 and 60 monthly payments of $ 750.00.

Julio chooses to finance the truck.

If he makes the payment through finance. Then the amount of the money he has to pay will be

Amount = 5000 + 60 × 750

Amount = 5000 + 45000

Amount = $50,000

If he makes the payment through finance. Then the amount of money he has to pay is 50,000 dollars.

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Find a formula for the sum of n terms. Use the formula to find the limit as n → [infinity]. lim n → [infinity] n 2 + i n 8 n i = 1

Answers

Complete Question

Find a formula for the sum of n terms.   [tex]\sum\limits_{i=1}^n ( 8 + \frac{i}{n} )(\frac{2}{n} )[/tex]

Use the formula to find the limit as [tex]n \to \infty[/tex]

 

Answer:

   [tex]K_n = \frac{n + 73 }{n}[/tex]

  [tex]\lim_{n \to \infty} K_n = 1[/tex]

Step-by-step explanation:

     So let assume that

                  [tex]K_n = \sum\limits_{i=1}^n ( 8 + \frac{i}{n} )(\frac{2}{n} )[/tex]

=>             [tex]K_n = \sum\limits_{i=1}^n ( \frac{16}{n} + \frac{2i}{n^2} )[/tex]

=>              [tex]K_n = \frac{2}{n} \sum\limits_{i=1}^n (8) + \frac{2}{n^2} \sum\limits_{i=1}^n(i)[/tex]

Generally  

         [tex]\sum\limits_{i=1}^n (k) = \frac{1}{2} n (n + 1)[/tex]

So  

      [tex]\sum\limits_{i=1}^n (8) = \frac{1}{2} * 8* (8 + 1)[/tex]

      [tex]\sum\limits_{i=1}^n (8) = 36[/tex]

[tex]K_n = \frac{2}{n} \sum\limits_{i=1}^n (8) + \frac{2}{n^2} \sum\limits_{i=1}^n(i)[/tex]  

and  

  [tex]\sum\limits_{i=1}^n (i) = \frac{1}{2} n (n + 1)[/tex]

  Therefore

         [tex]K_n = \frac{72}{n} + \frac{2}{n^2} * \frac{1}{2} n (n + 1 )[/tex]

         [tex]K_n = \frac{72}{n} + \frac{1}{n} (n + 1 )[/tex]

         [tex]K_n = \frac{72}{n} + 1 + \frac{1}{n}[/tex]

        [tex]K_n = \frac{72 + 1 + n }{n}[/tex]

        [tex]K_n = \frac{n + 73 }{n}[/tex]

Now  [tex]\lim_{n \to \infty} K_n = \lim_{n \to \infty} [\frac{n + 73 }{n} ][/tex]

=>     [tex]\lim_{n \to \infty} [\frac{n + 73 }{n} ] = \lim_{n \to \infty} [\frac{n}{n} + \frac{73 }{n} ][/tex]

=>     [tex]\lim_{n \to \infty} [\frac{n + 73 }{n} ] = \lim_{n \to \infty} [1 + \frac{73 }{n} ][/tex]

=>     [tex]\lim_{n \to \infty} [\frac{n + 73 }{n} ] = \lim_{n \to \infty} [1 ] + \lim_{n \to \infty} [\frac{73 }{n} ][/tex]

=>    [tex]\lim_{n \to \infty} [\frac{n + 73 }{n} ] = 1 + 0[/tex]

Therefore

      [tex]\lim_{n \to \infty} K_n = 1[/tex]

Hallar el conjunto solución de la siguiente inecuación: x^2-12x+36≤0

Answers

Answer:

x = 6

Step-by-step explanation:

x² - 12x + 36 ≤ 0

(x - 6)(x - 6) ≤ 0

(x - 6)² ≤ 0

x - 6 = 0

x = 6

es el único valor que cumple la condición, cualquier otro sera mayor que 0

In 2011, a U.S. Census report determined that 68% of college students are working students. A researcher thinks this percentage has changed and surveys 144 college students. The researcher reports that 93 of the 144 are working students. Is there evidence to support the researcher's claim at the 1% significance level

Answers

Answer:

We will fail to reject the null hypothesis and conclude that there is sufficient evidence not to support the researchers claim.

Step-by-step explanation:

We are given;

Population proportion; p = 68% = 0.68

Sample proportion; p^ = 93/144 = 0.6548

n = 144

The hypotheses are:

Null hypothesis;H0: p = 0.68

Alternative hypothesis;Ha: p ≠ 0.68

np = 144 × 0.6548 > 5 and nq = n(1 - p) = 144(1 - 0.68) > 5.

Since np and nq are more than 5, we can use the z-test .

z-formula in this case is;

z = (p^ - p)/√(p(1 - p))

Plugging in the relevant values, we have;

z = (0.6548 - 0.68)/√(0.68(1 - 0.6548))

z = -0.0252/0.4845

z = -0.052

From the z-table attached, we have a p-value of approximately 0.4801

P-value is higher than the significance level of 0.01.

Thus,we will fail to reject the null hypothesis and conclude that there is no sufficient evidence to support the researchers claim.

When Betsy Ross sewed the first American flag, the flag had an area of 27 square feet. If the base of the flag was 9 feet, what was the height of the flag?

Answers

Answer:

The height of the flag was 3 feet.

Step-by-step explanation:

To solve this problem, we must first recall the formula for area of a rectangle to be:

Area = base * height

Next, we can substitute in the values that we were given in the problem.  We were told that the area was 27 square feet and the base was 9 feet.

27 = 9 * height

Now we can treat this equation that we have created similar to any other equation we would like to solve.  We must solve for the unknown, or the variable, which in this case is the height.  To do this, we should divide both sides by 9 to get the "height" variable by itself on the right side of the equation.  This is modeled below:

27/9 = (9 * height)/9

3 = height

Therefore, the height of the flag was 3 feet.

Hope this helps!

Answer:

The height is 3,

Step-by-step explanation:

First up, if we know the B in the B*H=A formula, we can divide the area by the base (27/9) and get the height, 3.

I too am learning this. The thing is you want to do a reverse order. For example, 2*3=6; so automatically we would know that 6/3=2.

Hope this has helped!

:)

.2 CALCULATION Mr. Davis took a job through an employment agency. The job pays $88K per year. He must pay a fee to the employment agency. The fee is 22% of his first four weeks’ pay. How much money must Mr. Leonard pay the agency, to the nearest cent? K = 1,000 88K = 88 × 1,000 = __________ annual salary Weekly salary = annual salary ÷ 52 Weekly salary = 88,000 ÷ 52 = __________ 4 weeks salary = 4 × 1,692.31 = __________ 22% of 4 weeks salary = 6,769.24 × 0.22 ≈ __________ Mr. Leonard must pay the agency __________.

Answers

Answer: $1489.23 is the amount Mr. Leonard must pay to the agency, which is 22% of his 4-week salary of $6769.24.

This is assuming Mr. Davis and Mr. Leonard are the same person.

Fill in the blank answers: $88,000. $1692.31. $6769.24. $1489.23.

half of 5/6. thanks​

Answers

Answer: 41.665

Step-by-step explanation:

5/6 as a percent is 83.33.

83.33 divided by 2 equals 41.665.

So, the answer is 41.665.

Hope this helps!

Answer: 0.4166667

Explanation: Make 5/6 to 0.8333. Divide the decimal by 2.

Hope it helps!

lovelymoonlight

chemist is using 332 milieters of solution of acid and water if 14.4% of the solution is acid how many milliliters of acid is there​

Answers

Answer:

332*14.4% = 332*.144 = 47.808

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