A 001 significance level is used for a hypothesis test of th

A 0.01 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is different from 0.5. Assume that sample data consists of 55 girls in 100 births, so the sample statistic of 11/20 results in a z score that is 1 standard deviation above 0. Complete parts (a) through (h) below.

a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below.

A. H0: p=0.5

H1: >0.5

B. H0: 0.5

H1: p=0.5

C. H0: p=0.5

H1: p0.5

D. H0: p=0.5

H1: p<0.5

Solution

option (C) is correct for test if p = 0.5