When 3015 adults were surveyed in a poll, 73% said that they use the Internet. I

Question

When 3015 adults were surveyed in a poll, 73% said that they use the Internet. Is it okay for a newspaper reporter to write that "3/4 of all adults use the Internet"? Why or why not"? Identity the null hypothesis, alternative hypothesis test statistic, P-value, conclusion about the null hypothesis and final conclusion that addresses the original claim. Use the P-value method Use the normal distribution as an approximation of the binomial distribution. Identify the null and alternative hypotheses Choose the correct answer below. A. H_0: p = 0.25 H_1: p notequalto 0.25 B. H_0: p = 0.75 H_1: p 0.75 D. p = 0.25 H_1: p > 0.25 E. H_0: p = 0.25 H_1 p

Explanation / Answer

here option F is correct.

p=0.75 ; n=3015

therefore std error =(p(1-p)/n)1/2 =0.0079

therefore test stat z=(phat-p)/std error =(0.73-0.75)/0.0079=-2.54

p value =0.0112

Reject Ho. there is sufficient evidence to warrant reject..................................

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