Question 1090619: A 0.1 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 91 girls in 169 births, so the sample statistic of 7/13 results in a z score that is 1 standard deviation above 0.
a. Identify the null hypothesis and the alternative hypothesis.
b. What is the value of α?
c. Is the test two-tailed, left-tailed, or right-tailed?
d. What are the critical value(s)?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A 0.1 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 91 girls in 169 births, so the sample statistic of 7/13 results in a z score that is 1 standard deviation above 0.
a. Identify the null hypothesis and the alternative hypothesis.
Ho: p = 0.5
Ha: p # 0.5
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b. What is the value of α?
0.1 = 10%
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c. Is the test two-tailed, left-tailed, or right-tailed?
2-tailed
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d. What are the critical value(s)?
+/- invNorm(0.05) = 1.645
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Cheers,
Stan H.
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