Help please This Question: 15 pts 15 of 20 (18 complete) This Test: 275 pts poss

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Help please

This Question: 15 pts 15 of 20 (18 complete) This Test: 275 pts possible Question Help 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 7 reater than 0.5 Assume Complete parts (a) through (h) below. Click here to view page 1 of the Normal table. Click here to view page 2 of the Normal table. a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below OA, that sample data consists of 91 girls in 169 births, so the sample statistic of results in a z score that is 1 standard deviation above 0. O B. Ho:p#0.5 H p>0.5 ( D. Ho:p=0.5 H1: p# 0.5 Ho:p#0.5 H1:p 0.5 b. What is the value of ? (Type an integer or a decimal.) c. What is the sampling distribution of the sample statistic? Normal distribution Click to select your answer(s).

Explanation / Answer

a) Correct answer: Option (C)
b) alpha = 0.01
c) Option (A) : NOrmal distribution
d) Option (A) : Right tailed test
e)

Sample proportion p= 91/169 = 0.53846
Population proporiton P = 0.5, Q = 0.5

Test STatistic:
Z = (p-P) / sqrt(PQ/n) = (0.53846 - 0.5)/sqrt(0.5*0.5/169) = 1

f. P-value : 0.1587

g. Critical value: Z = 2.3264

h) 0.01

Here P-value > 0.01 and Z value < Z critical value, so we accept H0
Thus we conclude that the population proportion is not > 0.5

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