A lumber company is making boards that are 2578.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 20 boards is made, and it is found that they have a mean of 2580.2 millimeters with a variance of 64.00. Is there evidence at the 0.1 level that the boards are either too long or too short?
1. State the hypotheses.
2. Find the value of the t test statistic.
3. Specify if the test is one-tailed or two-tailed.
4. Determine the decision rule.
5. Determine the conclusion.
A) Reject Null Hypothesis
B) Fail to Reject Null Hypothesis

Answers

Answer 1

Answer:

-0.750

Step-by-step explanation:


Related Questions

Are ΔSUT and ΔXWV similar? If so, state the reason and the similarity statement.


Question 4 options:

A)

Yes; SSS; ΔSUT ∼ ΔXWV

B)

Yes; SAS; ΔSUT ∼ ΔXWV

C)

Yes; SSS; ΔTSU ∼ ΔXWV

D)

The triangles aren't similar.


Answers

Answer:

Yes (SSS) Triangle SUT is congruent to triangle XWV

Step-by-step explanation:

15/10 = 1.5

9/6 = 1.5

12/8 = 1.5

In ΔSUT and ΔXWV the given sides are in proportion. Therefore, option A is the correct answer.

What are similar triangles?

Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio. Either of these conditions will prove two triangles are similar.

The given two triangles are ΔSUT and ΔXWV.

From the triangle SUT, SU=10, UT=8 and ST=6

From the triangle XWV, VW=12, XW=15 and VX=9

Now, SU/XW = UT/VW = ST/VX

10/15 = 8/12 = 6/9

2/3 = 2/3 = 2/3

The given sides are in proportion.

So, by SSS similarity ΔSUT∼ΔXWV

Therefore, option A is the correct answer.

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Someone please help me with this.

Answers

Answer:

fjf brotherhood handy urgency if it's by Griffith Jr it cuz if he by us if he my na na na hg hg hhbnnnnnñmmmmnnnnnnnn

Which shows the best path to find the number of centimeters in 1 yard?
yards -> inches -> centimeters
yards -> feet -> centimeters
centimeters -> feet -> inches
centimeters -> feet -> yards

Answers

Answer:

yards feet centimeters

find the rational number halfway between 1/5 and 1/6

Answers

yes that is the answer lol

help plssssssssssssssssss

Answers

Answer:

There’s two options for each. Look below.

Step-by-step explanation:

Savings: there is no risk of losing any money put into this account

              interest income is the only way to earn money in this type

‘investment: this account may generate income from a variety of sourses.

                  If no deposits or withdrawals are made, money held in this acct..

For which of the following values of X is 5+X < 5?

Answers

Answer:

x<1

Step-by-step explanation:

5+x<5

x<5-5

x<1

it simply is one , you just take five to the other side making x the subject of the formula

What is the first step in evaluating the expression shown below? (12 ÷ ( 7 . 4 − 3 . 6 ) + 8 − 2) A. Subtract 7 . 4 − 3 . 6 . B. Divide 12 ÷ 7 . 4 . C. Add 3 . 6 + 8 . D. Subtract 8 − 2 .

Answers

Answer:

A

Step-by-step explanation:

(12 ÷ ( 7 . 4 − 3 . 6 ) + 8 − 2)

Follow the order of operations, the first thing to do would be the parenthesis.

7.4 - 3.6 = 3.8

So, your answer would be A, Subtract 7 . 4 − 3 . 6.

Have a wonderful day!

Answer:

A hope you get it right

(☞゚ヮ゚)☞     ¯\_(ツ)_/¯

Which expression is shown on the number line?

Answers

Answer: i think its e

Step-by-step explanation:......

Answer:

no.A 5/3÷×1/3 is the answer

o.5 is < or > or = to 0.7

Answers

Answer:

.5 < .7

Step-by-step explanation:

unless its negatives, the bigger the number the more value it has

0.5 > 0.7 i hope this helpsssss

help help exponents help

Answers

Answer:

3

Step-by-step explanation:

The base is the number below the exponent.

Explain what the diameter of a circle is. If you had the diameter of a circle, how could you solve for the circumference?

Answers

Answer:

The diameter cannot solve for the circumference, you need the Radius to do it.

Step-by-step explanation:

If you want to use the Diameter divide the Diameter by 2. Diameter=D Radius=R

So to find the circumference of a Circle, 2÷D=R. Now we do 2[tex]\pi[/tex]R. So now to find the answer we have to do 2x[tex]\pi[/tex]xR

50 POINTS !!


PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.


Answers

Answer:

its 28

Step-by-step explanation:

C is the longest side which is 35 ye and b is 21 yd. Then you would subtract 21^2 from 35^2 and you would get 784. Then find the square root of 784 and you would get 28 as the answer! Good luck and have a great day or night!

Answer:

28 yards

Step-by-step explanation:

We can use pythagorean theorem to solve this problem; pythagorean theorem is denoted by the formula a^2 + b^2 = c^2. We already have b, as 21 yd and c, as the hypotenuse is 35 yd. We can plug these values into the formula:

a^2 + 21^2 = 35^2

a^2 + 441 = 1225

a^2 = 784

a = 28 yards

Put the following equation of a line into slope-intercept form, simplifying all
fractions.

Answers

Answer:

Y=2x+4

Step-by-step explanation:

Y=Mx+b is the slope intercept formula

subtract 2x so you get -y=-2x-4. Then divide everything by-1 .


Question 40 of 43
Researchers conduct a study to evaluate the level of
pollution present in a river. They select several locations
along the river and then take a sample of water from each
location.
What is the population under study?

ILL GIVE BRANLIEST OR HOWEVER YOU SPELL IT

Answers

Answer:

c

Step-by-step explanation:

i did it

Answer:

The correct answer is C.

Step-by-step explanation:

I did the exam.

Insert the greater than, less than, or equal sign (>, <, or =) to make each statement true.
a. 45⁄45 ____1
b. 1____ 6⁄3
c. 2⁄7 ____1
d. 64⁄23 ____1

Answers

Answer:

a. 45/45 = 1

b. 1 < 6/3

c. 2/7 < 1

d. 64/23 > 1


The relay race is 5 kilometers long. If there are 12 racers
per team, how far would each racer need to run?a.5/12 b.12/5 c.1 2/5 d.5 1/12

Answers

Answer:

A

Step-by-step explanation:

pleaseeee helppppppp

Answers

Answer:

The answer is A [   5(a + 6)   ]

Step-by-step explanation:

Can you construct a triangle with side lengths of 1 meter, 7 meters, and 8 meters?


Yes or no and explain

Answers

Answer:

No.

Step-by-step explanation:

No.

Each side of a triangle must have a length between the difference and the sum of the lengths of the other two sides.

Let's look at the sum and difference of lengths of 2 sides.

Side with length 1 and side with length 7; third side with length 8

sum of lengths of first two sides = 1 + 7 = 8

difference = 7 - 1 = 6

The third side would have to have a length between 6 and 8. The third side has a length of 8. For a triangle, the third side must be between the sum and difference. Here, the third side is equal to the sum, so there is no triangle.

As soon as one side does not work, there is no triangle, and you don't need to check the sums and differences of the other two sets of two sides.

i don’t know if it’s B or C what do you guys think?

Answers

Answer:

I think it is D.

Step-by-step explanation:

It is a guess, but I am not fully sure.

If correct, may I have a brainliest?

                      XxRoadToAcexX

Answer:

D) 17.51

Step-by-step explanation:

D) 17.51

What is the result when you combine only the constants in the following expression?
3 a minus 6 b + 3 minus 7 a + 10

Answers

Answer:

6b-4a+13

Step-by-step explanation:

3a-6b+3-7a+10

3+10=13

3a-7a=-4a

6b-4a+13

Answer:

13

Step-by-step explanation:

Simplify the variable expression below as much as possible.
3x + 2y + 5-3

Answers

Answer:

3x+2y+2=0

3x=-2y-2

x=-(2y+2)/3

Step-by-step explanation:

2) Justin works at supermarket and regularly earns $10.50 per hour. In the past five
days, his time card shows that he worked 5.3, 3.4, 6.0, 5.5, and 5.3 hours. What is his
gross pay?

Answers

If 1 hour is $10.50

5.3X10.5=$55.65
3.4X10.5=$35.7
6.0X10.5=$63.0
5.5X10.5=$57.75
There gross pay is the summation of the four earnings =$212.10

Manufacturers are testing a new cologne before it's released. A machine uses sensors to determine if the cologne is working (maintaining a scent for 1 hour)

a. 15/82
b. 15/37
c. 22/37
d. 1​

Answers

Answer:

It’s B

Step-by-step explanation:

Evaluate each limit given that lim f(x) =1/3 and lim g(x)=2/3

Answers

Answer: 2,1 & 2

Step-by-step explanation:

[tex]\lim_{x \to c}[3g(x)][/tex] = 2, [tex]\lim_{x \to c}[f(x)+g(x)] = \frac{-1}{3}[/tex],  [tex]\lim_{x \to c}[\frac{f(x)}{g(x)} ] = \frac{1}{2}[/tex]

What is Limit?

"A limit is the value that a function (or sequence) "approaches" as the input (or index) "approaches" some value."

We have Limit functions

[tex]\lim_{x \to c} f(x)[/tex] [tex]= \frac{1}{3}[/tex]

[tex]\lim_{x \to c} g(x)[/tex] = [tex]\frac{2}{3}[/tex]

(i) [tex]\lim_{x \to c} [3g(x)] = 3 \lim_{x \to c} [g(x)][/tex]

= [tex]3[/tex] × [tex]\frac{2}{3}[/tex]

= 2

(ii) [tex]\lim_{x \to c}[f(x)+g(x)][/tex]

= [tex]\lim_{x \to c} f(x)+ \lim_{x \to c} g(x)[/tex]

= [tex]\frac{1}{3}-\frac{2}{3}[/tex]

= [tex]\frac{1-2}{3}[/tex]

= [tex]\frac{-1}{3}[/tex]

(iii) [tex]\lim_{x \to c}[\frac{f(x)}{g(x)} ][/tex]

= [tex]\frac{\lim_{x \to c} f(x)}{\lim_{x \to c} g(x)}[/tex]

= [tex]\frac{\frac{1}{3} }{\frac{2}{3} }[/tex]

= [tex]\frac{1}{2}[/tex]

∴ [tex]\lim_{x \to c}[3g(x)][/tex] = 2, [tex]\lim_{x \to c}[f(x)+g(x)][/tex] = [tex]\frac{-1}{3}[/tex] , [tex]\lim_{x \to c}[\frac{f(x)}{g(x)} ] = \frac{1}{2}[/tex]

Learn more about Limit and limit functions here

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Can someone solve these for me?

Answers

Answer:

In order of pictures,

Picture #1: 230

Picture #2: 140

Picture #3: 9.9

Picture #4: 13.5

Picture #5: 7.07

Step-by-step explanation:

I am not entirely sure that 3 - 5 are correct, but I know that 1 and 2 are correct. I am sorry if they are incorrect.

Hope that this helps!

Suppose you deposit $1500 in a savings account that pays interest at an annual rate of 3.5%. Non money is added or withdrawn from the account. How much will be in the account after 5 years? How much will be in the account after 20 years?

Answers

Answer:

5 years : 1781.52

20 years: 2984.68

Q3) There are 200 passengers on a plane. 84 of them are women and 12 are children.
What percentage of them are:
a) women
b) children
c) neither women nor children?

Answers

A. Women
Step 1: Divide 84 by 200
84/200 =

84 ÷ 200 =

0.42

Step 2: Convert the result to decimal
0.42 = 42%

B. Children
Step 1: Divide 12 by 200
12/200 =

12 ÷ 200 =

0.06

Step 2: Convert the result to decimal
0.06 = 6%

C. Other
Step 1: Add the given numbers
84 + 12 = 96

Step 2: Subtract the total from the result
200 - 96 = 104

Step 3: Divide 104 by 200
104/200 =

104 ÷ 200 =

0.52

Step 4: Convert 0.52 to decimal
0.52 = 52%

find f(3) for the polynomial function F(x)=x^3-9x^2+5x-2

Answers

Answer:

f(3) = -41

Step-by-step explanation:

f(x) = x³-9x²+5x-2

now,

f(3) = 3³-9×(3)²+5×3-2

= 27-9×9+5×3-2

= 27-81+15-2

= -41

PLSSS ASAPP HELPP!!!!!!!!!Determine the perimeter of the rectangle shown below.

A)42
B)21
C)441
D) There is not info given to this question
E)None of these answers are correct

Answers

Answer:

42

Step-by-step explanation:

Add up all of the sides, dont bother with negatives and positives because that does not matter when finding area or perimeter on a coordinate plane

Can someone help me with this I don’t know the answer

Answers

Answer: 271.2

Step-by-step explanation: Explanation is below.

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