mountain climbing: accidents the following problem is based on information taken from accidents in north american mountaineering (jointly published by the american alpine club and the alpine club of canada). let x represent the number of mountain climbers killed each year. the long-term variance of x is approximately s2 5 136.2. suppose that for the past 8 years, the variance has been s2 5 115.1. use a 1% level of significance to test the claim that the recent variance for number of mountain climber deaths is less than 136.2. find a 90% confidence interval for the population variance.

Answers

Answer 1

The test statistic (6.01) is lesser than the critical value (2.167), we reject the null  thesis. Therefore, there's sufficient  substantiation to support the claim that the recent  friction for the number of mountain rambler deaths is  lower than 136.2.

To find a 90 confidence interval for the population  friction, we can use the  ki-square distribution with 7 degrees of freedom. thus, we can say with 90 confidence that the population  friction lies within the interval(3.325,14.067).    

To test the claim that the recent  friction for the number of mountain rambler deaths is  lower than136.2, we can conduct a one-  tagged  thesis test using the  ki-square distribution. The null and indispensable  suppositions are as follows  Null  thesis( H ₀) The recent  friction is equal to or lesser than136.2( σ ² ≥136.2).

Indispensable  thesis( H ₁) The recent  friction is  lower than136.2( σ ²<136.2).  

Using the given information, we can calculate the test statistic as  Test Statistic =

(( n- 1) * s ²) σ ²  

where n is the sample size( 8) and s ² is the recent  friction(115.1).  Calculating the test statistic yields  Test Statistic

= (( 8- 1) *115.1)/136.2 ≈6.01  

With a significance  position of 1 and 7 degrees of freedom( n- 1), the critical  ki-square value is  roughly2.167.

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Related Questions

If 23% of is 46, then what is the value of ?​

Answers

Answer:

10.58

Step-by-step explanation:

the percentage multiplier is 0.23

so do 46 x0.23 = 10.58

a square has side length 95 what is the length of the diagonal of the square express your asnser in simplest radical form

Answers

Answer

134.35

Step by step explanation

95+39.35

=134.35

Answer:

95(sq rt 2)

Step-by-step explanation:

Pythagorean theorem

95^2+95^=diagonal^2

diagonal^2=18050

95(sq rt 2)

help me will mark as brainliest can someone give me the answer of both or atleast one​

Answers

Answer:

8. the length is 88/5cm or 17.6cm

Step-by-step explanation:

8.perimeter =2L + 2W

when you convert the width 42/5 = 8.4

so 52 = 2L + 2*8.4

52= 2L + 16.8

52 - 16.8 = 2L

35.2 = 2L

divide both sides by 2

L = 17.6cm

Help me please answer thanks

Answers

Answer:

all of them are right, there's no wrong answer.

Step-by-step explanation:

all answers are x = 20,

Amy buys 8 sandwiches and 12 waters.her total cost is 8s+12 how much did she pay. S=sandwiches

Answers

Answer:

8s + 12

s=12-8

s=4

or

8s +12

s=12+8

s=20

Step-by-step explanation:

im not sure kung minus o plus kasi kung kinus mababa lang binayad nya

S=12-8=4 hope this helps :)

What is the pattern for valence electrons on the periodic table?

Answers

Answer:

In general, the number of valence electrons is the same within a column and increases from left to right within a row. Group 1 elements have just one valence electron and group 18 elements have eight, except for helium, which has only two electrons total.

Step-by-step explanation:

What is the expanded form of this number?
570.086
A (5×100)+(7×10)+(8×1100)+(6×1100)

B (5×100)+(7×10)+(8×110)+(6×1100)

C (5×100)+(7×10)+(8×110)+(6×11,000)

D (5×100)+(7×10)+(8×1100)+(6×11,000)

Answers

Answer:

B

Step-by-step explanation:

I think it is No am not sure exactly

The expanded form of this number 570.086 is,

⇒ (5 × 100) + (7 × 10) + (8 × 1/100) + (6 × 1/1000)

What is Place value?

The value represented by a digit in a number on the basis of its position in the number is called a Place value.

Given that;

The number is,

⇒ 570.086

Now, We can expand the number as;

⇒ 570.086

⇒ 500 + 70 + 00 + 8/100 + 6/1000

⇒ (5 × 100) + (7 × 10) + (8 × 1/100) + (6 × 1/1000)

Thus, The expanded form is,

⇒ (5 × 100) + (7 × 10) + (8 × 1/100) + (6 × 1/1000)

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The vertices of a swimming pool are E(5, 5), F(5, 20), G(35, 20), and H(35, 5). The endpoints of a line that divides the pool into two sections are J(15, 5) and K(15, 20). The coordinates are measured in meters. What is the area of each section?

Answers

Answer:

Step-by-step explanation:

Find the circumference. Use 3.14 for pi. ​

Answers

Answer:

62.8

Step-by-step explanation:

3.14 x 20 = 62.8

Its about 62.83

2π x radius

radius - 10 ( Half the Diameter )

AB=
Round your answer to the nearest hundredth

Answers

Answer:

Step-by-step explanation:

2/sin25=AB/sin90

 AB=4.73

HELPPP 25 POIIIIINTSS.......​

Answers

Answer:

good luck, i hope this helps :)

Admission to the carnival cost four dollars then each game cost $.50 if Kalen can spend no more than $10 how many games can she play

Answers

Answer:

12

Step-by-step explanation:

10-4=6

6÷0.50 = 12

Help asap!
a baker Has 88 muffins he fills large boxes that hold 9 muffins each then he puts the leftover muffins in a small box how many muffins are in the small box

Answers

Answer:

7

Step-by-step explanation:

9*9=81

81+7=88

Answer:

7

Step-by-step explanation:

88 / 9 = ?

9 x 9 = 81

88 - 81 = 7

7/9

88 / 9 = 9 7/9

9 is in the large box

7 in the small box

GIVING BRAINLIST!!! m∠GHI=98° and m∠JKL=82°.

Which statement is true about ∠GHIand​∠JKL​?




The angles are neither complementary nor supplementary.

The angles are complementary.

The angles are supplementary.

Answers

Answer:

The angles are supplementary

Step-by-step explanation:

Supplementary angles add up to 180 degrees

Hope this helps! :)

Answer:

The angles are supplementary.

Step-by-step explanation:

82 plus 98 is 180, so the angles are supplementary.

I hope this helps!

Thx for Brainliest!

Can anyone answer 20-24

Answers

mmm no but try the slader app! XD

I need help with this plz

Answers

Answer :

B I think that’s the answer
12 + 13 + 14 + 18 + 14 + 13 + 14 + 17 + 12 + 13

= 140

÷10

= 14

Answer is B

PLEASE HELP ME GUYS!! ITS URGENT

Answers

I think yes they are similar because both of the sizes are equal

Student A's scores have a standard deviation of 5.4 and Student B's scores have a standard deviation of 10.6. What does Student B's higher standard deviation mean of his/her test scores?

Answers

Answer:

Student B's score has a greater variation from the mean than student A's score

Step-by-step explanation:

Student A : standard deviation = 5.4

Student B : standard deviation = 10.6

The standard deviation is used to measure the degree of variability of a measured value from the mean or average value of the set. The higher the value of standard deviation, the greater the variabilityabiut the mean. Hence for the question given above, Student B's score varies greatly from the mean Than student A's score.

PLEASE HELP ASAP! WILL MARK BRAINIST! PLEASE PLEASE

Answers

Answer:

Step-by-step explanation:

its c

I believe it is A I am not positive because I am not good at math

Which line is parallel to y=2x-3?


A. y=-2x+4


B. y=2x+4


C. y=1/2x+4


D. y= - 1/2x+4

Answers

The answer is B I believe!

Which property is illustrated by the following statement?
AJAR= AJAR
A
J
R
A. Transitive
OB. Associative
O C. Reflexive
D. Symmetric


Answers

Answer: Reflexive

Step-by-step explanation:

The property that illustrated by the following statement is D.  Symmetric

What is reflexive property of congruence?

The reflexive property of congruence says that the considered geometric quantity, whether it be angle, line segment, or shape etc, is congruent to itself.

The symmetric property of congruence says, for objects A and B,

 if A ≅ B, then B ≅ A.

The symmetric property of congruence makes the  statement true:

 if ΔHXA ≅ ΔRGI, then ΔRGI ≅ ΔHXA

Here properties:

 Reflexive -- an object is congruent to itself: ΔHXA ≅ ΔHXA

 Commutative , the operations allow the order of their operands to be reversed: A +B = B +A for addition; AB = BA (for scalar multiplication)

 Transitive -- if A ≅ B and B ≅ C, then A ≅ C.

Learn more about the Symmetric

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Could someone please help me with this

Answers

The first number is 3 and the second is 18

Algebra 1 Please help! thank u sm

Answers

Answer:

1. Slyvia is wrong. You treat the numbers normally when dividing the left side, so 3.61/4.1 = .88. When dividing the exponents, you subtract the numerator from the denominator, so -11-7 = -18. So, you do have .88 * 10^-18, at first, but when you are working in scientific notation you want the decimal to be greater than so, which requires us to add an additional -1, to make it 8.8 instead of 0.88. This is because we want to move the decimal place left one more time. This results in our final answer being 8.8 * 10^-19, which is not Slyvia's answer.

2. Dylan's answer is correct. He subtracted the exponents correctly, then moved the decimal place over one place towards the left.

3. Ethan is wrong. He added the exponents, instead of subtracting. However, you cannot do this, because when you are dividing exponents, you must subtract.

Step-by-step explanation:

I have this acronym I learned called MADSPM, which has helped me a lot. I never learned it in Algebra, but I wish that they had taught it. Each letter corresponds with an exponent rule. If this makes sense, here is what it stands for:

When you multiply, you add.

When you divide, you subtract.

When there are parentheses, you multiply.

In this case, it was solely division. So, you just need to remember division = subtraction, when it comes to exponents.

Hopefully this helped. If you need me to explain it better, please let me know, and I will try. Thanks much & have a wonderful day!

obtenha os zeros da função
[tex]f(x) = 2x {}^{2} + 32[/tex]

Answers

———111111111111111111111111111111

A sign in a bakery gives these options: Option A: 15 cupcakes for $30 Option B: 30 cupcakes for $56 Option C: 60 cupcakes for $100 1. Find each unit price to the nearest cent. 2. Which option is the best deal per cupcake and gives the lowest unit price?​

Answers

We’re looking for cost per cupcake.

Option A: 15 cupcakes for $30
$30 / 15 = $2 per cupcake

Option B: 30 cupcakes for $56
$56 / 30 = $1.86666 (round to $1.87) per cupcake

Option C: 60 cupcakes for $100
$100 / 60 = $1.66666 (round to $1.67) per cupcake

Option C is the lowest unit price, and best deal

For all parts of this question, use the function y + 2 = 3(x + 4)
Part A: Complete the x-y table:

Answers

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

A person places $103 in an investment account earning an annual rate of 1.9%, compounded continuously. Using the formula V = P e r t V=Pe rt , where V is the value of the account in t years, P is the principal initially invested, e is the base of a natural logarithm, and r is the rate of interest, determine the amount of money, to the nearest cent, in the account after 6 years.

Answers

Answer:

$115.36

Step-by-step explanation:

Given data

P=$103

r=1.9%

t= 6 years

The expression for the amount is given as

[tex]V = P e ^{r t}[/tex]

substitute

[tex]V = 103*e^{0.019 *6}[/tex]

[tex]V = 103*e^{0.114}\\\\V = 103*1.120\\\\V = 115.36\\\\[/tex]

Hence the final amount is $115.36

The roots of a quadratic equation are 5 and
2
3
. If one of the two factors of the equation is
x

5
, which expression could be a second factor?


2
x

3

2 x − − 3

2
x
+
3

2 x + 3

3
x

2

3 x − 2

3
x
+
2

3 x + 2

Answers

I think before we get to this answer we need to understand how roots of a quadratic equation works.

When a quadratic equation have 2 real roots such as a/b and c/d we can write the quadratic equation in factored form like this y or 0=(bx-a)(dx-c)

In this case we know the 2 roots are 5 and 2/3 and one of the factors is already x-5. so the other one according to the equation above that I wrote have to be 3x-2 and therefore the 3rd choice is correct.

Hope this helped you and if there is any questions about this please let me know in the comments.

Which is the correct value for tanN? *
A tanN=16/20
B tanN=16/12
C tanN=12/20
D tanN=12/16

Answers

Answer:

D

Step-by-step explanation:

3/4 = 12/16

What is the least common multiple of 36 and 90?

Answers

Answer:

180

Step-by-step explanation:

36, 72, 108, 144, 180

90, 180

Have a great day!

Stay safe!

Bye!

<3

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