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
Marizza181 [45]
3 years ago
10

When testing gas pumps for accuracy, fuel-quality enforcement specialists tested pumps andfound that 1304 of them were not pumpi

ng accurately (within 3.3 oz when 5 gal ispumped),and 5689 pumps were accurate. Use a 0.01 significance level to test the claimof an industryrepresentative that less than 20% of the pumps are inaccurate.
Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

The p-value of the test statistic from the standard normal table is 0.0017 which is less than the level of significance therefore, the null hypothesis would be rejected and it can be concluded that there is sufficient evidence to support the claim that less than 20% of the pumps are inaccurate.

Step-by-step explanation:

Here, 1304 gas pumps were not pumping accurately and 5689 pumps were accurate.

x = 1304, n = 1304 + 5689 = 6993

The level of significance = 0.01

The sample proportion of pump which is not pumping accurately can be calculated as,

The claim is that the industry representative less than 20% of the pumps are inaccurate.

The hypothesis can be constructed as:

H0: p = 0.20

H1: p < 0.20

The one-sample proportion Z test will be used.

The test statistic value can be obtained as:

Z=\frac{\hat{p}-P}{\sqrt{\frac{P(1-P))}{n}}}\\\\Z=\frac{0.186-0.20}{6993}\\\\Z=-2.927

You might be interested in
A train left Podunk and traveled north at 75 km/h. Two hours later, another train left Podunk and traveled in the same direction
Andreyy89
Answer:

8 hours

Steps:

Train 1:

Hours: 1, 2, 3, 4, 5, 6, 7, 8

Miles: 75, 150, 225, 300, 375, 450, 525, 600

Train 2:

Hours: 1, 2, 3, 4, 5, 6, 7, 8

Miles: 0, 0, 100, 200, 300, 400, 500, 600
6 0
3 years ago
What is a decimal that is equivalent to the fraction 8/10<br> ? Enter the answer in the box.
N76 [4]

Answer:

0.8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
One serving of a certain brand of yogurt contains 9 g of fat. The​ low-fat version contains 36.75​% less fat per serving. How ma
slava [35]

Answer:

Answer Choices??

Step-by-step explanation:

5 0
2 years ago
In 2011, U.S. exports of goods and services are $2,094 billion and imports of goods and services are $2,662 billion.
daser333 [38]

Answer:

$-568 billion dollars.

Step-by-step explanation:

2,094 - 2,662= -568.

Hope this helps and good luck!

7 0
3 years ago
Please solve this ASAP for 30 points
e-lub [12.9K]

Answer:

welpp

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • don't ignore please answer cool tees is having a back to school sale where all t-shirts are discounted by 15%. joshua wants to b
    6·1 answer
  • Alex invested $400 in a CD that pays 3% simple interest, calculated semiannually. How much money will Alex earn in 2 years? A. $
    10·1 answer
  • In the algebraic expression 7/y, what is the coefficient of y? Explain
    15·1 answer
  • Bob works at a construction company. He has an equally likely chance to be assigned
    7·1 answer
  • For a sample with m = 20 and s = 4, a score of x = 17 would be considered an extremely low score.
    14·1 answer
  • 1. Which congruence statement is true? I'm not sure if I'm right.
    8·1 answer
  • this year Martin income is 1/4 greater than his income from last year. If s represents his income from last year, what is his in
    7·1 answer
  • Answer for 11 points and brainliest
    10·1 answer
  • The diameter is twice the radius<br> True<br> O False
    8·2 answers
  • 10. A company's value is also known as their what?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!