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 delivery truck traveled ¼ of its route in 2 hours How long does it take to complete one route?
stepladder [879]

Answer:

8 hours

Step-by-step explanation:

1/4 = 2h

2h times 4 = 8h

8 0
3 years ago
Read 2 more answers
512 64 18 16] 4 2 2 2 8 1 42 111 ( 8.1.2.1.1 4,2121 81111​
vagabundo [1.1K]
Do you have an actual question you need help with or what
4 0
3 years ago
What is the median of the data below?<br><br> 45, 19, 23, 67, 28, 35, 46, 21, 58, 60, 23, 51
VLD [36.1K]
To find the median, you will need to list the data from least to greatest and find the middle number.

19, 21, 23, 23, 28, 35, 45, 46, 51, 58, 60, 67

Cross out a number on both sides until you reach the middle number. In this case, we are left with 2 numbers that are in the middle since there is an even amount of numbers. 

When you reach the time where you have two middle numbers, we have to find the average of those two numbers. Our two middle numbers are 35 and 45. Since we have to find the average of those two numbers, we can add them. (35 + 45 = 80). Now, since we have two middle numbers, we have to divide them by 2. 
80 \div 2 = 40

Answer: \fbox {Median = 40}
4 0
3 years ago
Read 2 more answers
A sphere is inscribed in a cube. Explain the relationship between the surface areas of the two solid figures
Helga [31]

Answer:

No one knows. Jk just go look at the other brainly links. the question has already been asked and answered so you can go see them there.

Step-by-step explanation:

:)

3 0
3 years ago
Please help thank you
mamaluj [8]
Hm..I'm pretty sure the answer is 34
8 0
3 years ago
Other questions:
  • Estimate the sum 523+117
    10·2 answers
  • Which of the following represents the most accurate estimation of 4+8
    10·2 answers
  • CAN SOMEONE PLS HELP WITH THIS!!
    12·2 answers
  • A+a-ay+3y+4?????????
    7·2 answers
  • The length of a rectangle is equal to triple the width. What are the dimensions of the rectangle if the perimeter is 88cm.
    7·1 answer
  • 2h - 3.24 = -1.1 ya'll smart ya'll got dis :)
    8·2 answers
  • Tristen's cat had 3 baby kittens. Each kitten weighed 1 pounds. How many ounces did all of his kittens weigh together?​
    13·1 answer
  • 2
    8·1 answer
  • Points A, B, and C are collinear. Point B is between A and C. Find the length indicated.​
    10·1 answer
  • Write the equation in standard form for the circle with center (-5,8) and radius 4
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!