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

Question

Terminology. In Exercises 29 and 30, use the given information to answer the following: a. Identify the null hypothesis and the alternative hypothesis. b. at 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? 29. Gender Selection A 0.01 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 greater than 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.

Explanation / Answer

Part-a

Null hypothesis H0: p<=0.50

Alternative hypothesis Ha: p>0.50

Part-b

Alpha=0.05

Part-c

Sampling distribution of sample statistic is standard normal

Part-d

Test is right tailed

Part-e

Value of test statistic Z=1

Part-f

P-value=P(Z>1)=0.1586

Part-g

Critical Z=1.645

Part-h

Area of critical region is 0.05 and we reject H0 is calculated Z>1.645

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