Gender Selection A 0.05 significance level is used for a hypothesis test of the claim that when parents use the XSORT method of gender selection, the proportion of baby girls is different from 0.5. Assume that sample data consist of 55 girls born in 100 births, so the sample statistic of 0.55 results in a z score that is 1.00 standard deviation above 0.

Terminology. In Exercises 29 and 30, use the given information to answer the following:

a. Identify the null hypothesis and the alternative hypothesis.

b. What is the value of a?

c. What is the sampling distribution of the sample statistic?

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

e. What is the value of the test statistic?

f. What is the P-value?
g. What is the critical value?
h. What is the area of the critical region?