1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sindrei [870]
2 years ago
6

The contents of a sample of 26 cans of beer showed a standard deviation of 0.06 ounce. We are interested in testing to determine

whether the variance of the population is significantly more than .003. The null hypothesis is:______.
a. should be rejected.
b. should be revised.
c. should not be rejected.
d. none of these answer.
Mathematics
1 answer:
snow_tiger [21]2 years ago
8 0

Answer:

The null hypothesis should not be rejected.

Step-by-step explanation:

We are given that the contents of a sample of 26 cans of beer showed a standard deviation of 0.06 ounce.

Let \sigma^{2} = <u><em>population variance</em></u>

So, Null Hypothesis, H_0 : \sigma^{2} \leq 0.003      {means that the variance of the population is significantly less than or equal to 0.003}

Alternate Hypothesis, H_A : \sigma^{2} > 0.003      {means that the variance of the population is significantly more than 0.003}

The test statistics that would be used here <u>One-sample chi-square</u> test statistics;

                           T.S. =  \frac{(n-1)\times s^{2} }{\sigma^{2} }  ~  \chi^{2}__n_-_1

where, s^{2} = sample variance = 0.06^{2} = 0.0036 ounces

            n = sample of cans of beer = 26

So, <u><em>the test statistics</em></u>  =  \frac{(26-1)\times 0.0036 }{0.003 }  ~ \chi^{2}__2_5

                                     =  30

The value of chi-square test statistics is 30.

Since in the question, we are not given with the level of significance so we assume it to be 5%. <u>Now at 5% level of significance, the ch-square table gives a critical value of 37.65 for right-tailed test.</u>

Since our test statistics is less than the critical value of chi as 30 < 37.65, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region.

Therefore, we conclude that the variance of the population is significantly less than or equal to 0.003.

You might be interested in
What is the number that is two more than one-tenth of one-fifth of one-tenth of 2,000​
topjm [15]

Answer:

6

Step-by-step explanation:

2 + (1/10)(1/5)(1/10)2000 = 2 + (1/500)(2000) = 2 + 4 = 6

6 0
2 years ago
The area of a trapezoid is 60 square feet. If the bases of the trapezoid are 8 feet and 12 feet, what is the height?
Margarita [4]

Answer:

6

Step-by-step explanation:

60 = 12+8 divided 2 times height

60 = 20/2 x H

60 = 10 x H

60/10 = h

6 = H

7 0
2 years ago
If triangle ocd ≅ triangle JAL, then which of the following statements are true?
Roman55 [17]

Answer:

I III and IV

Step-by-step explanation:

8 0
2 years ago
Need to know these two problems
Arturiano [62]
Multiple 16 by 1 and then divide by 8 which makes 2.

Multiply 36 by 1 and then divide by 9 which makes 4.
5 0
3 years ago
Read 2 more answers
Jireh flew his crop duster from the ground to an altitude of 3,500 feet. He continued to fly at that height for 20 minutes until
exis [7]

Answer: Jireh flew his crop duster from the ground to an altitude of 3,500 feet.

Step-by-step explanation:

That is an example of an increasing interval.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Solve 3x - x + 2 = 12
    15·1 answer
  • How to fit 6 into 10 more than once so you get a remander
    13·2 answers
  • Math question. PLEASE HELP. I really need it
    11·2 answers
  • A bag contains 816 White market 14 red marbles and 10 Green marbles a marble is drawn at random from the bag what is the probabi
    9·1 answer
  • ∠5 ​ and​ ​ ∠6 ​ ​are complementary angles.<br><br> m∠5=13°<br><br> What is the measure of ​ ∠6 ​?
    10·1 answer
  • What is 14x+2y=6 -7x-2y=-13
    15·1 answer
  • What is the positive difference between the square of the sum of the first five positive integers and the sum of the first five
    12·1 answer
  • What is 0.00025 in scientific notation​
    12·2 answers
  • A fair spinner has 10 equal sections: 3 red, 3 blue and 4 green.
    14·1 answer
  • Tell me the coordinates to graph it plz
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!