A 0.01 significance level is used for a hypothesis test of the claim that when p
ID: 3066214 • Letter: A
Question
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 greater than 0.5. Assume that sample data consists of 55 girls in 100 births, so the sample statistic of StartFraction 11 Over 20 EndFraction results in a z score that is 1 standard deviation above 0. Complete parts (a) through (h) below. Click here to view page 1 of the Normal table. LOADING... Click here to view page 2 of the Normal table. LOADING... a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below. A. Upper H 0: pequals0.5 Upper H 1: pnot equals0.5 B. Upper H 0: pequals0.5 Upper H 1: pgreater than0.5 Your answer is correct.C. Upper H 0: pnot equals0.5 Upper H 1: pgreater than0.5 D. Upper H 0: pequals0.5 Upper H 1: pless than0.5 b. What is the value of alpha? alphaequals 0.01 (Type an integer or a decimal.) c. What is the sampling distribution of the sample statistic? chi squared Student (t) distribution Normal distribution Your answer is correct. d. Is the test two-tailed, left-tailed, or right-tailed? Right-tailed Your answer is correct. Left-tailed Two-tailed e. What is the value of the test statistic? The test statistic is 1. (Type an integer or a decimal.) f. What is the P-value? The P-value is 0.1587. (Round to four decimal places as needed.) g. What are the critical value(s)? The critical value(s) is/are nothing. (Round to two decimal places as needed. Use a comma to separate answers as needed.)
Explanation / Answer
a. H0:p=0.5 versus H1:p>0.5
b.0.01
c.Normal DIstribution
d.Right tailed
e.The test statistics value is 1
f.p-value 0.1586
g.Critical value is 2.33
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