Question

A poll of 2017 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the claim that 93​% 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).

Test of p=0.93 vs p≠0.93
Sample	X	N	Sample p	​95% CI	​Z-Value	​P-Value
1	1849	2,017	0.916708	​(0.900860​,0.932556​)	−2.34	0.019

a) Is the test​ two-tailed, left-tailed, or​ right-tailed?

b) What is the test​ statistic?

c) What is the​ P-value?

d) What is the null hypothesis and what do you conclude about​ it?

A. H₀: p=0.93

B. H₀: p>0.93

C. H₀: p≠0.93

D. H₀: p less than 0.93

e) Choose the correct answer below.

A. Reject the null hypothesis because the​ P-value is greater than the significance​ level, alpha.

B. Fail to reject the null hypothesis because the​ P-value isgreater than the significance​ level, alpha.

C. Reject the null hypothesis because the​ P-value is less than or equal to the significance​ level, alpha.

D. Fail to reject the null hypothesis because the​ P-value is less than or equal to the significance​ level, alpha.

f) What is the final​ conclusion?

A.There is sufficient evidence to support the claim that 93​% of adults own a cell phone.

B.There is not sufficient evidence to warrant rejection of the claim that 93​% of adults own a cell phone.

C.There is sufficient evidence to warrant rejection of the claim that 93​% of adults own a cell phone.

D. There is not sufficient evidence to support the claim that 93% of adults own a cell phone.

Answer 1