A poll of 2,009 randomly selected adults showed that 95% of them own cell phones. The technology display below results from a test of the claim that 92% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through(e). Test of p=0.920.92 vs p≠0.92 Sample=1, X=1915 N=2,009, Sample p=.953211, 95%CI (.943976, .962445), Z-Value=5.49P-Value=0.000

Is the test two-tailed, left-tailed, or right-tailed?

What is the test statistic?

What is the P-value?

What is the null hypothesis and what do you conclude aboutit?

Choose the correct answer below.

A. Reject the null hypothesis because the P-value is less than or equal to the significance level, alphaα.

B. Fail to rejectFail to reject the null hypothesis because theP-value is greater than the significance level, alphaα.

C. Fail to rejectFail to reject the null hypothesis because theP-value is less than or equal to the significance level, alphaα.

D. Reject the null hypothesis because the P-value is greater than the significance level, alphaα.

a) two-tailed test

b) Z=5.49

c) P-value=0.000

d) The null hypothesis states that the proportion is equal to 0.92 (p=0.92).

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

e) A. Reject the null hypothesis because the P-value is less than or equal to the significance level α.

Step-by-step explanation:

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

As the alternative hypothesis is defined with a unequal sign, the rejection can happen for a sample statistic that is too low or too high. So both tails are part of the rejection region. Then, this test is a two-tailed test.

b) What is the test statistic?

The test statistic is the Z-value: Z=5.49.

c) What is the P-value?

The P-value is P=0.000, corresponding to the Z-value of point b.

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

The null hypothesis states that the proportion is equal to 0.92 (p=0.92).

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

e) As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

A. Reject the null hypothesis because the P-value is less than or equal to the significance level α.

true

step-by-step explanation:

according to the national european world center, the engineering of the ford company on elon musk's flame throwers proved the globalization of the natural wallabies and therefore, results in the growth product domestication in almonds.