13) Find the p-value for a right tailed test with a z-score = 2.5. Use a .05 significance level to state the conclusion of the Null Hypothesis (this is a pleasant warm-up for problems going forward).14) In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain. Test the claim that cell phone users develop cancer of the brain at a rate different from the rate of .0340% for people who do not use cell phones. Use a .005 signigicance level. Should cellphone users be concerned?

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Asked Nov 26, 2019
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13) Find the p-value for a right tailed test with a z-score = 2.5. Use a .05 significance level to state the conclusion of the Null Hypothesis (this is a pleasant warm-up for problems going forward).

14) In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain. Test the claim that cell phone users develop cancer of the brain at a rate different from the rate of .0340% for people who do not use cell phones. Use a .005 signigicance level. Should cellphone users be concerned?

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Expert Answer

Step 1

13

Find the p-value for a right tailed test with a z-score = 2.5.

Given that,

Z-score = 2.5

Right tailed test

Step 2

The p-value for a right tailed test with a z-score = 2.5, from the standard normal distribution table are calculated as follows:

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P- value P(Z 2.5) 1-P(Z<2.5) =1-0.9938 =0.0062

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Step 3

Answer: Hence, the p-value with z-valu...

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