QUESTION 7 In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of...

QUESTION 7

In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain or nervous system (based on data from the Journal of the National Cancer Institute as reported by US Today). The claim is that cell phone users develop cancer of the brain or nervous system at a rate that is greater than the rate of 0.034% (0.00034) for people that do not use cell phones.

Use this information to answer this question and the next five (5) questions.

The 95% confidence interval for the true population proportion of cell phone users who develop brain or nervous system cancers is (lower confidence limit bound, upper confidence limit bound ).

QUESTION 8

What can you conclude by comparing the 95% Confidence Interval and the rate of cancer of the brain or nervous system for non-cell phone users? Justify your answer.

QUESTION 9

In performing a formal test of hypothesis to determine if the use of cell phones increases the rate development of the brain or nervous system cancers, the form hypotheses are:

H_o: Pu = 0.00034; H_a: Pu ≠ 0.00034

H_o: Pu = 0.00034; H_a: Pu > 0.00034

H_o: Pu > 0.00034; H_a: µ < 0.00034

H_o: Pa = 0.00034; H_a: Pa ≠ 0.00034

QUESTION 10

Using the cell phone brain and nervous system cancer rate information from above, find the appropriate critical standard normal z-value for performing the test of hypothesis.

QUESTION 11

Perform the formal test of hypothesis and obtain the z-calc value to see if using cell phones increases the rate of the development of the brain or nervous system cancers using the information from above.

QUESTION 12

Compare z-critical and z-calc and draw the appropriate conclusion for this test of hypothesis. Justify your answer.

Expert Solution

orchestra answered 1 year ago

In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain...

In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain or nervous system (based on data from the Journal of the National Cancer Institute as reported by US Today). The claim is that cell phone users develop cancer of the brain or nervous system at a rate that is greater than the rate of 0.034% (0.00034) for people that do not use cell phones. 1. What can you conclude by comparing the 95% Confidence...

In a study of 420,087 cell phone users, 108 subjects developed cancer of the brain or...

In a study of 420,087 cell phone users, 108 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 420,122 cell phone users, 103 subjects developed cancer of the brain or...

In a study of 420,122 cell phone users, 103 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 comma 083 cell phone users, 139 subjects developed cancer of the...

In a study of 420 comma 083 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,...

In a study of 420 comma 073 cell phone users, 110 subjects developed cancer of the...

In a study of 420 comma 073 cell phone users, 110 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,...

11. In a study of 420,055 cell phone users, 150 subjects developed cancer of the brain...

11. In a study of 420,055 cell phone users, 150 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...

n a study of 420,112 cell phone users, 110 subjects developed cancer of the brain or...

n a study of 420,112 cell phone users, 110 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 420,079 cell phone users, 133 subjects developed cancer of the brain or nervous system.

In a study of 420,079 cell phone users, 133 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 420,017 cell phone users,180 subjects developed brain cancer. Test the claim that...

In a study of 420,017 cell phone users,180 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. What is the test statistic? What is the P-value?

A study of 420,042 cell phone users found that 130 of them developed cancer of the...

A study of 420,042 cell phone users found that 130 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0323% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. a. __% <...

Question