Question

A sample of 900 computer chips revealed that 68%68% of the chips fail in the first...

A sample of 900 computer chips revealed that 68%68% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 67% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is different from the stated percentage. Find the value of the test statistic. Round your answer to two decimal places.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

We have for given example,                  
Population proportion value is =0.67              
          
n=900              
              
Estimate for sample proportion =0.68              
                  
Z test statistic formula for proportion                  


=0.64  

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample of 900 computer chips revealed that 59% of the chips fail in the first...
A sample of 900 computer chips revealed that 59% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 62% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is less than the stated percentage. Is there enough evidence at the 0.10 level to support the manager's claim? Step 1 of 7: State the...
A sample of 1600 computer chips revealed that 56% of the chips fail in the first...
A sample of 1600 computer chips revealed that 56% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 59% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is different from the stated percentage. Make the decision to reject or fail to reject the null hypothesis at the 0.02 level.
A sample of 1300 computer chips revealed that 40% of the chips fail in the first...
A sample of 1300 computer chips revealed that 40% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 37% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is different from the stated percentage. Make the decision to reject or fail to reject the null hypothesis at the 0.02 level.
A sample of 1200 computer chips revealed that 49% of the chips fail in the first...
A sample of 1200 computer chips revealed that 49% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 50% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is below the stated percentage. Is there enough evidence at the 0.05 level to support the manager's claim? Step 1 of 7: State the null...
A sample of 1800 computer chips revealed that 41% of the chips do not fail in...
A sample of 1800 computer chips revealed that 41% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 44% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Find the value of the test statistic. Round your answer to two decimal...
A sample of 1500 computer chips revealed that 27% of the chips do not fail in...
A sample of 1500 computer chips revealed that 27% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 25% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Find the value of the test statistic. Round your answer to two decimal...
A sample of 1100 computer chips revealed that 70% of the chips do not fail in...
A sample of 1100 computer chips revealed that 70% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 73% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Is there enough evidence at the 0.05 level to support the manager's claim?
A sample of 1400 computer chips revealed that 47% of the chips do not fail in...
A sample of 1400 computer chips revealed that 47% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 50 % of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Determine the decision rule for rejecting the null hypothesis, H0 , at...
A sample of 1500 computer chips revealed that 28% of the chips do not fail in...
A sample of 1500 computer chips revealed that 28% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 30% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Determine the decision rule for rejecting the null hypothesis, H0, at the 0.02...
A sample of 1600 computer chips revealed that 78% of the chips do not fail in...
A sample of 1600 computer chips revealed that 78% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 77% of the chips do not fail in the first 1000hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is more than the stated percentage. Is there enough evidence at the 0.02 level to support the manager's claim? State...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT