A population has standard deviation g = 17.2.
Part 1 of 2
(a) How large a sample must be drawn so that a 99.8% confidence interval for I will have a margin of error equal to 3.8?
Round the critical value to no less than three decimal places.
Round the sample size up to the nearest integer.
A sample size of is needed to be drawn in order to obtain a 99.8% confidence interval with a margin of error equal to
3.8.
Part 2 of 2
(b) If the required confidence level were 80%, would the necessary sample size be larger or smaller?
(Choose one) because the confidence level is (Choose one)
х

Answers

Answer 1

Answer:

idk

Step-by-step explanation:

       


Related Questions

how do you solve 1/2x=6​

Answers

Answer:

x=12

Step-by-step explanation:

multiply 2 from both sides to isolate x

then u should end up with 1x=12

list four advantages and disadvantages of measures of location​

Answers

Step-by-step explanation:

Advantages of using measures of dispersion are that it gives us a better idea of the range in which an average was calculated and it is easy to calculate and understand. A disadvantage of using measures of dispersion is that it is a broad measurement because it only shows the maximum and minimum values of data.

HELP PLEASEEEEEEEEEEE

Answers

Answer:

I not see the number 2

I think that is number 2

Answer:

first and last one should be the answer (not sure about the first, cant see it too good)

True or false? The value zc is a value from the standard normal distribution such that P(−zc < z < zc) = c.

Answers

Answer:

False

Step-by-step explanation:

The standard normal distribution is represented by P(-zc < z < zc) = c

From this, you see that -zc is less than the variable of interest z and z is less than zc.

The equation simply means that the probability that -zc is less than z and z is less than zc, is c.

The value zc is NOT a value from the above distribution. All values in the distribution are of the variable z. For example, z might be equal to 1, z might be equal to 6, but the variable of interest in the distribution is z, not zc.

15 POINTS!!!

Based on a life insurance company's past data, each year an average of 1/90 policy holders
make a claim of $250; 1/100 policy holders make a claim of $12,000, and 1/400 make a claim
of $17,000. What would the insurance company have to charge per policyholder to break
even?

Answers

Answer:

1. The expected pay-out on each policy is 250 * 1/90 + 12000 * 1/100 + 17000 * 1/400 = $165.  So that's what the premium would have to be in order to get a profit of 0.

 

2. The profit per policy is the premium the company receives minus the expected payout = 350 - 165 = $185.

 

3. The expected profit on 375 policies would be 375 * 185 = $69375

Step-by-step explanation:

A 40 ​-inch board is to be cut into three pieces so that the second piece is 4 as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first​ piece, find the lengths of all three pieces.

Answers

Answer:

4*4=16 INCHES FOR THE SECOND PIECE. 5*4=20 INCHES FOR THE LONGEST PIECE.

Step-by-step explanation:

x = 20 inch, the length of the first piece

What is mathematical expression?

A mathematical expression is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

given,

Total length = 40 inch

let first piece be = x inch

second piece = 4 times of first piece = 4x inch

third piece = 5 times of first piece = 5x inch

So,

x + 4x + 5x = 200

10x = 200

x = 200/10

x = 20

Therefore, the length of the first piece is 20 inch

Read more about mathematical expression here :

https://brainly.in/question/26994041

#SPJ2

Write the equation of the line that passes through the points (-2, -3)
and (-8,3). Put your answer in fully reduced point-slope form, unless
it is a vertical or horizontal line.

Answers

Answer:

[tex]\huge\boxed{y+3=-(x+2)}\\or\\\boxed{y-3=-(x+8)}[/tex]

Step-by-step explanation:

The point-slope form of an equation of a line:

[tex]y-y_1=m(x-x_1)[/tex]

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Put the coordinates of the given point:

(-2, -3); (-8, 3)

[tex]m=\dfrac{3-(-3)}{-8-(-2)}=\dfrac{3+3}{-8+2}=\dfrac{6}{-6}=-1\\\\\text{for}\ (-2;\ -3)\\\\y-(-3)=-1(x-(-2))\\\\y+3=-(x+2)\\\\\text{for}\ (-8;\ 3)\\\\y-3=-1(x-(-8)\\\\y-3=-(x+8)[/tex]

Plzz help I don’t get it

Answers

You need to add your angles together to get the letter.
Add all of the angles together

Dave owns Dave's Donut Shop and must make decisions about how much to charge for donuts. As a businessowner he wants to attract a lot of customers as well as make a lot of money (revenue). The amount of revenue Dave makes can be modeled by the equation R = (p-1)(200 - 40p), where p represents the price of one donut and R represents the total revenue. Use as many strategies as you can to figure out the questions below. 0 At what price will Dave break even (make no revenue)? How much should Dave charge to maximize his revenue? What is the most money Dave can make? Dave made $100 from donut sales. How much must he have charged per donut?​

Answers

Answer:

2430

Step-by-step explanation:

The revenue is the amount of money generated by an organization from sales or services made in a specific time. The conclusion from the computation made are:

The break even price is at $1 and $5To maximize his revenue, he as to charge $3The most money he can make is $160He charged $4.225 or $1.775 to make $100.

Given that:

[tex]R = (p - 1)(200 - 40p)[/tex]

To calculate the break even, we set R to 0.

So, we have:

[tex](p - 1)(200 - 40p) =0[/tex]

Split

[tex]p - 1 = 0[/tex] or [tex]200 - 40p = 0[/tex]

Solve for p

[tex]p = 1[/tex] or [tex]40p = 200[/tex]

Divide by 40 in the second equation

[tex]p=1[/tex] or [tex]p =5[/tex]

The break even price is at $1 and $5

To maximize his revenue, we have:

[tex]R = (p - 1)(200 - 40p)[/tex]

Open bracket

[tex]R = 200p - 200 - 40p^2 + 40p[/tex]

Rewrite as:

[tex]R = - 40p^2+ 200p + 40p- 200[/tex]

[tex]R = - 40p^2+ 240p- 200[/tex]

Differentiate

[tex]R' = -80p + 240[/tex]

Equate to 0 and solve for p

[tex]-80p + 240=0[/tex]

[tex]-80p =- 240[/tex]

Divide by -80

[tex]p = 3[/tex]

To maximize his revenue, he as to charge $3

The most money he can make is calculated as:

[tex]R = (p - 1)(200 - 40p)[/tex]

Substitute [tex]p = 3[/tex]

[tex]R = (3 - 1)(200 - 40 \times 3)[/tex]

[tex]R = (3 - 1)(200 - 120)[/tex]

[tex]R = 160[/tex]

The most money he can make is $160

The charges he sold when he made $100 is:

[tex]R = - 40p^2+ 240p- 200[/tex]

Substitute 100 for R

[tex]- 40p^2+ 240p- 200=100[/tex]

Collect like terms

[tex]- 40p^2+ 240p- 200-100=0[/tex]

[tex]- 40p^2+ 240p- 300=0[/tex]

Divide through by -20

[tex]2p^2- 12p+ 15=0[/tex]

Using quadratic formula, the solution of p is:

[tex]p = \frac{-b \± \sqrt{b^2 - 4ac} }{2a}[/tex]

So, we have:

[tex]p = \frac{-(-12) \± \sqrt{(-12)^2 - 4\times 2 \times 15} }{2 \times 2}[/tex]

[tex]p = \frac{12 \± \sqrt{24} }{4}[/tex]

[tex]p = \frac{12 \± 4.90 }{4}[/tex]

Split

[tex]p = \frac{12 + 4.90 }{4}\ or p = \frac{12 - 4.90 }{4}[/tex]

[tex]p = \frac{16.90 }{4}\ or\ p = \frac{7.1 }{4}[/tex]

[tex]p = 4.225\ or\ p = 1.775[/tex]

He charged $4.225 or $1.775 to make $100.

Read more about revenue and price at:

https://brainly.com/question/11859895

An ordered pair that satisfies all the equations in a linear system of equations is called a(n) __________ of the linear system.​

Answers

Answer:solution

Step-by-step explanation:

An ordered pair that satisfies all the equations in a linear system of equations is called a: solution of the linear system.

A linear function is a function that has a positive relationship between its variables.

Hence, an increase in one variable (input variable) causes an increase in the other variable (output variable) because the variables are directly proportional.

Mathematically, the graph of a linear function is a straight-line and its slope is always constant.

On a related note, a linear system of equation is an algebraic equation of the first order with two variables and each of its term having an exponent of one.

Generally, a system of linear equations in two variables must have at least two solution.

In conclusion, a solution of the linear system is an ordered pair that satisfies all the equations in a linear system of equations.

Read more: https://brainly.com/question/24085666

A researcher conducts two studies. Each study was a one-sample z test. Both studies placed the rejection region in both tails and measured the same sample mean. The beat level in Study 1 was larger than the beta level used in Study 2. Which study is associated with greater power to detect an effect

Answers

Answer:

Study 2 will produce a greater power to detect an effect because it has a lower beta level

Step-by-step explanation:

Generally, alpha level is the probability of rejecting the null hypothesis when it's true. Whereas beta level is the opposite and it's the probability of accepting the null hypothesis even though it’s false.

Now, in statistics the lower the alpha level, the more we require a stronger evidence. Thus, a higher alpha level is usually required to produce a stronger evidence.

Now, an increase in alpha level means a decrease in beta level and a decrease in alpha level means an increase in beta level.

This means that the lower the beta level, the greater is the power to detect an effect.

Now, we are told that the beta level in study 1 was larger than the beta level used in Study 2.

Thus, study 2 will produce a greater power to detect an effect because it has a lower beta level

g A circle is a special case of an ellipse. Explain how a circle is different from other ellipses.

Answers

Answer:

Main difference between circle & ellipse

Step-by-step explanation:

Circle is a line forming a close loop, all points on the loop line are at equal distance from the centre, that distance is called Radius. Eg : Wheel

Ellipse is also a close loop line, such that distance of locus of all points on the plane to two fixed points (foci) always sum up to same constant. Eg : Orbits of planets

Cricle is the round shape entity in which it contains only radius and double of radius is diameter Thus below explanation is the answer to the Question

Explanation:

Cricle is the most rounded shape. Its different from ellipse because it has the radius, chord  and diameter.cricle can be drawn easily with compass and ellipse is oval shape.cricle contains two types perimeter cricle and normal cricle. Ellipse has also two types partial ellipse and normal ellipse.Cricle does not  have major and minor axis length both are different.

Thus we conclude that cricle is totally different from ellipse

To know more about cricle and ellipse

https://brainly.com/question/9689499

Chantel graphs S and T. The corresponding angles are congruent. The side lengths of T are 5 times as long as the corresponding side lengths of S. Can you give a sequence of transformations that will map S onto T?

Answers

Answer:

Turn it by 90 degrees

Step-by-step explanation:

Question is too vague sorry if this doesn't help

Answer:

fernanda i have no idea how to do this

Step-by-step explanation:

Evaluate each expression.
b)

d)
169 cm2:13x13=169 13cm by cm

2500 cm2:50x50=2500 50cm by cm

/8
a) 2 + (10 − 3) =2+(10-3)
c)
(4 + 3)2 − (3 − 1)3 =
= 2+(7)=10

=


=






11.






b) (3 + 5) × 6 ÷ 3 + (8 + 52)
d)
18 + (4 + 5)2 × 2
=
=(7)x6/3+(177)


=
=(42/30


=
=


=
=



=

Answers

Answer:

atleast 1

Step-by-step explanation:

Is 8.25 greater, equal or less than 8.250

Answers

Answer:

If this is basic mathematics its =

Step-by-step explanation:

You won't have to worry about sig figs until chemistry.

3/5 x 1/7 please help

Answers

3/5 x 1/7 = 3/35, characters

Answer:

3/35

Step-by-step explanation:

3*1=3

5*7=35

3/35

Find the difference in lowest term 7/18 - 3/18

Answers

Answer:

2/9

Step-by-step explanation:

4/18 and that can be reduced by dividing both (denominator and numerator) by 2 which leaves you with 2/9

Hope that helps and have a great day!

I have 47 red marbles and 76 blue marbles estimate the total number of marbles I have

Answers

Answer:

about 130 marbles

Step-by-step explanation:

round 47 to 50

round 76 to 80

you have about 130 marbles

Answer:

About 100.

Step-by-step explanation:

47+76=123

123 is closer to 100 than to 200.

can you please help me ​

Answers

Answer:

14

Step-by-step explanation:

because they are just reflected  that's why 12 and 8 are flipped and have a great day

14 they’re reflected

8. Round to the nearest hundredth: 433.680

Answers

Answer:

433.68

Step-by-step explanation:

Answer:

433.68

Good Luck!!!

Please Assist!
What is the answer to this question???

Answers

Answer:

[tex](-5,\frac{1}{2} )[/tex]

Step-by-step explanation:

Midpoint Formula: [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )[/tex]

Simply plug in your coordinates into the midpoint formula to find midpoint:

R(-2, 3)

S(-8, -2)

[tex](\frac{-2+-8}{2},\frac{3+-2}{2} )[/tex]

[tex](\frac{-10}{2},\frac{1}{2} )[/tex]

[tex](-5,\frac{1}{2} )[/tex]

|2x+5|-4=16 find both answers

Answers

Answer:

x=7.5 and x=-12.5

Step-by-step explanation:

|2x+5|-4=16

|2x+5|=20

2x+5=20

2x=15

x=7.5

2x+5=-20

2x=-25

x=-12.5

HELP ME ASAP!!! I WILL MARK BRAINLIEST!!

Answers

Answer:

76.95

Step-by-step explanation:

9.5X8/1(8.1 IS THE NUMBER YOU MULTIPLY IT BY)=76.95

3х3 - 2х2
Simplify if not possible write simplified

Answers

Answer:

[tex] \large{3 \times 3 - 2 \times 2}[/tex]

[tex] \large{9 - 4}[/tex]

[tex] \large{5}[/tex]

is 1.5 less than 1.25

Answers

I guess it’s smaller because there is a 5 and a 25 and 25 is bigger than 5

Answer:

1.5 > 1.25

Step-by-step explanation:

1.5 is smaller than 1.25

Joe and Ben are saving money for a new x-box game. Joe has saved $15.00 in 2 weeks and $37.50 in 5 weeks. Ben's savings are represented by the equation
y=8.25x
y=8.25x
.
Find the difference in their savings each week?

Answers

Answer:

37.50/5 = $7.50/week

so the difference is 8.25-7.50 = $0.75/week

Step-by-step explanation:

Sunflower
Post Malone, Nicky Jam, ...
Ayy, ayy, ayy, ayy (ooh)
Ooh, ooh, ooh, ooh (ooh)
Ayy, ayy
Ooh, ooh, ooh, ooh
Needless to say, I keep her in check
She was a bad bad, nevertheless (yeah)
Callin' it quits now, baby, I'm a wreck (ayy)
Crash at my place, baby, you're a wreck (ayy)
Needless to say, I'm keepin' her in check
She was a bad bad, nevertheless
Callin' it quits now, baby, I'm a wreck
Crash at my place, baby, you're a wreck
Thinkin' in a bad way, losin' your grip
Screamin' at my face, baby, don't trip
Someone took a big L, don't know how that felt
Lookin' at you sideways, party on tilt
Ooh, some things you just can't refuse
She wanna ride me like a cruise
And I'm not tryna lose
Then you're left in the dust
Unless I stuck by ya
You're a sunflower
I think your love would be too much
Or you'll be left in the dust
Unless I stuck by ya
You're the sunflower
You're the sunflower
Every time I'm leavin' on ya (ooh)
You don't make it easy, no, no (no)
Wish I could be there for ya
Give me a reason to (to, to)
Oh, every time I'm walkin' out (ayy)
I can hear you tellin' me to turn around
Fightin' for my trust and you won't back down
Even if we gotta risk it all right now, oh (now)
I know you're scared of the unknown (known)
You don't wanna be alone (alone)
I know I always come and go (and go)
But it's out of my control
And you'll be left in the dust
Unless I stuck by ya
You're the sunflower
I think your love would be too much
Or you'll be left in the dust
Unless I stuck by ya
You're the sunflower
You're the sunflower
(Yeah)

Answers

Sunflower by Malone into the spider verse is answer lol

Answer:

ok

Step-by-step explanation:

heres a memeeeee

Which rule describes a composition of transformations that maps pre-image PQRS to image P"Q"R"S"?

270 degree rotation about point 0 composition. Translation of negative 2 units x, 0 units y.
Translation of negative 2 units x, 0 units y composition 270 degree rotate about point 0.
270 degree rotation about point 0 composition reflected across the y-axis
Reflected across the y-axis composition 270 degree rotation about point 0.

Answers

Answer:

270 degree rotation about point 0 composition .translations of negative 2 units

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Took the test

If a =
3
5
, b = 3, c = 1, d = 5, which equality is true?

A)
d
a
=
b
c
B)
a
b
=
c
d
C)
b
a
=
c
d
D)
a
d
=
b
c

Answers

Answer:

I'm nauseous, I'm dyin'

(She ripped my heart right out)

Can't find her, someone to

(My eyes are all cried out)

Lost it, riots

Gunfire inside my head, I've

Lost it, riots

Gunfire inside my head  78tt566786876

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

just took this test

Maura runs 5 miles in 1.25 hours. Ava runs 3 miles in 50 minutes or 0.83¯ hour.
Who runs faster? Use the drop-down menu to show your answer.

Answers

Answer:

Ava

Step-by-step explanation:

because we multiply by 3 miles, 50 minutes, 0.83

and you get 124.5

its not maura because if you multiply 5 miles, by 1.25 hours you get 6.25

sorry if wrong! hope this helps!

Other Questions
Can I have help with just number 6 On which river were dams built to generate electricity?MissouriO MississippiO ColoradoOhio The restaurant bill for Annette is $55.82.She adds an 18% tip for the waiter.What is the total cost of Annette's meal rounded to the nearest cent?pls answer seriously, I'm failing this class its so hard for me :( Select all that apply.Becoming a better listener can help you to avoid being: _______ to do something you do NOT want to do.SELECT ALL THAT APPLY!!!1.persuaded2.convinced3.informed4.inclined5.expressed How does Rainsford and Whitney differ in their feelings about animals? -6x =48need help urgently put 0.12, 0.1225, 3/25, 7/125 in order from least to greatest What are the benefits of computer? NEXT QUESTION. when the moon is between the earth and the sun, what moon phase will this be??a. full moon.b. new moon.c. first quarter.d. last quarter. Write 30/45 in simplest form Why would lysosomes help a cell MORE THAN the Golgi Body? Think about the functions of the two organelles.A.lysosomes pack up proteins that the cells needs and transports them to different parts of the cellB. lysosomes move throughout the cell and keeps the cell healthy by breaking down waste and toxins C.lysosomes control the activity of the rest of the cellD. lysosomes storage water and nutrients that the cell needs in order to survive A taxi company charges $3 per ride plus $1.50 for each mile traveled. Andrea wants to spend no more than $24 on a taxi ride. How many miles can Andrea travel? Select all that apply. write the sentence as an equation.241is the same as 364 fewer than f X to the power of 2 plus Y to the power of 2 plus 4x-2y=1The equation of a circle in a xy plane is shown above. what is the radius of the circle.A) 2 B) 3 C) 4D) 9 I have no idea what the answer is The liquid inside a cell is called? In a square, what is the relationship between the length of a side and the area?A. proportionalB. cannot be determinedc. non proportional d. ratio Answer ASAP!!! First correct answer gets brainliest What is the value of x?sin(x+22)=cos(2x7) Visitors to a cinematic are either children, adults or pensioners. Ratio of children to adult visitors is 1:2 Ratio of adults to pensioners is 3:4 A stratified sample of 85 is to be taken from the cinema visitors. How many pensioners should there be in the sample? help please order the temperatures from least to greatest ! -0.8 C -1.2 C 0.5 C - 2.0 C 0.8 C