Question

A clinical trial was conducted using a new method designed to increase the probability of conceiving a boy. As of this writing, 280 babies were born to parents using the new method, and 232 of them were boys. Use a 0.01 significance level to test the claim that the new method is effective in increasing the likelihood that a baby will be a boy. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution, complete parts (a) through (e). What are the null and alternative hypotheses? A. H0: p = 0.5 H1: p > 0.5 B. H0: p ≠ 0.5 H1: p = 0.5 C. H0: p < 0.5 H1: p = 0.5 D. H0: p > 0.5 H1: p = 0.5 E. H0: p = 0.5 H1: p < 0.5 F. H0: p = 0.5 H1: p ≠ 0.5 What is the test statistic? z = __ What is the P-value? P-value = What is the conclusion about the null hypothesis? A. Reject the null hypothesis because the P-value is less than or equal to the significance level, α. B. Fail to reject the null hypothesis because the P-value is greater than the significance level, α. C. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, α. D. Reject the null hypothesis because the P-value is greater than the significance level, α. What is the final conclusion? A. There is not sufficient evidence to warrant rejection of the claim that the new method is effective in increasing the likelihood that a baby will be a boy. B. There is sufficient evidence to support the claim that the new method is effective in increasing the likelihood that a baby will be a boy. C. There is sufficient evidence to warrant rejection of the claim that the new method is effective in increasing the likelihood that a baby will be a boy. D. There is not sufficient evidence to support the claim that the new method is effective in increasing the likelihood that a baby will be a boy.

A clinical trial was conducted using a new method designed to increase the probability of conceiving a boy. As of this writing, 280 babies were born to parents using the new method, and 232 of them were boys. Use a 0.01 significance level to test the claim that the new method is effective in increasing the likelihood that a baby will be a boy. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution, complete parts (a) through (e).

What are the null and alternative hypotheses?
A. H0: p = 0.5 H1: p > 0.5
B. H0: p ≠ 0.5 H1: p = 0.5
C. H0: p < 0.5 H1: p = 0.5
D. H0: p > 0.5 H1: p = 0.5
E. H0: p = 0.5 H1: p < 0.5
F. H0: p = 0.5 H1: p ≠ 0.5

What is the test statistic? z = ______________________________

What is the P-value? P-value = ____________________________

What is the conclusion about the null hypothesis?
A. Reject the null hypothesis because the P-value is less than or equal to the significance level, α.
B. Fail to reject the null hypothesis because the P-value is greater than the significance level, α.
C. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, α.
D. Reject the null hypothesis because the P-value is greater than the significance level, α.

What is the final conclusion?
A. There is not sufficient evidence to warrant rejection of the claim that the new method is effective in increasing the likelihood that a baby will be a boy.
B. There is sufficient evidence to support the claim that the new method is effective in increasing the likelihood that a baby will be a boy.
C. There is sufficient evidence to warrant rejection of the claim that the new method is effective in increasing the likelihood that a baby will be a boy.
D. There is not sufficient evidence to support the claim that the new method is effective in increasing the likelihood that a baby will be a boy.

Added by Matthew G.

Question

Please give Ace some feedback