Question

2. You are sick and tired of having to get a new cell phone every three...

2. You are sick and tired of having to get a new cell phone every three years.

Your friend claims this is all your problem because cell phones last more than 5 years. You want to test his claim and take a sample of 27 people and find that they have replaced their phones a mean of 4.6 years with a standard deviation of 1.9 years. Test your friends claim at the .10 level of significance. What do you conclude about the null? What do you conclude about his claim? Would your results change if you used a .05 level of significance ?

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

Homework Answers

Answer #1

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
40. A cell phone manufacturer claims that its phone will last for more than 8 hours...
40. A cell phone manufacturer claims that its phone will last for more than 8 hours of continuous talk time when the battery is fully charged. To test this claim at a​ 10% level of​ significance, a random sample of 18 phones were selected. The results showed a sample mean of 8.2 hours and a sample standard deviation of 0.4 hour. Based on the data and hypothesis​ test, can you dispute the cell phone​ manufacturer’s claim? A. YES B. NO...
A marketing manager for a cell phone company claims that the percentage of children aged 8-12...
A marketing manager for a cell phone company claims that the percentage of children aged 8-12 who have cell phones differs from 61%. In a survey of 826 children aged 8-12 by a national consumers group, 545 of them had cell phones. Can you conclude that the manager's claim is true? Use the α=0.10 level of significance and the P-value method with the TI-84 Plus calculator. a. state null and alternative hypothesis. what tail is the hypothesis test? b. Compute...
In a study of 420,118 cell phone​ users, 137 subjects developed cancer of the brain or...
In a study of 420,118 cell phone​ users, 137 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a...
In a study of 420,096 cell phone​ users, 113 subjects developed cancer of the brain or...
In a study of 420,096 cell phone​ users, 113 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a...
In a study of 420,102 cell phone​ users, 135 subjects developed cancer of the brain or...
In a study of 420,102 cell phone​ users, 135 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a...
In a study of 420,082 cell phone​ users, 123 subjects developed cancer of the brain or...
In a study of 420,082 cell phone​ users, 123 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a 0.005...
In a study of 420 comma 052 cell phone​ users, 136 subjects developed cancer of the...
In a study of 420 comma 052 cell phone​ users, 136 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance,...
In a study of 420 comma 136 cell phone users, 139 subjects developed cancer of the...
In a study of 420 comma 136 cell phone users, 139 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of 0.0340% for people who do not use cell phones. Because this issue has such great importance,...
A poll of 2,061 randomly selected adults showed that 97% of them own cell phones. The...
A poll of 2,061 randomly selected adults showed that 97% of them own cell phones. The technology display below results from a test of the claim that 94% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Show your work. ***Correct answers are in BOLD (how do we get those answers) Test of p=0.94 vs p≠0.94 X= 1989, N= 2061, Sample...
In a study of 420 comma 043 cell phone​ users, 182 subjects developed brain cancer. Test...
In a study of 420 comma 043 cell phone​ users, 182 subjects developed brain cancer. Test the claim that cell phone users develop brain cancer at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a 0.005 significance level. Use this information to answer the following questions. a. Which of the following is the hypothesis test to be​ conducted? A. Upper H 0...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT