The Genetics and IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceiving a boy. 291 babies were born to parents using the YSORT method, and 239 of them were boys. Use a 0.01 significance level to test the claim the YSORT method is effective in increasing the likelihood that a baby will be a boy. A. The null hypothesis is i. p < 0.5" ii. p > 0.5" iii. p = 0.5" iv. p is not equal to 0.5" B. The computed z-test statistic is i. 9.54 ii. 7.81 iii. 10.96 iv. 8.39 C. The critical/tabular z-test statistic is i. 2.58 ii. 2.33 iii. 1.645 iv. 1.96 D. Decision rule: i. Reject the null hypothesis. ii. Do not reject the null hypothesis. E. The final conclusion is i. The YSORT method designed to NOT decrease the probability of a boy. ii. The YSORT method designed to NOT increase the probability of a boy. iii. The YSORT method designed to increase the probability of a boy. iv. The YSORT method designed to decrease the probability of a boy.
The Genetics and IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceiving a boy. 291 babies were born to parents using the YSORT method, and 239 of them were boys. Use a 0.01 significance level to test the claim the YSORT method is effective in increasing the likelihood that a baby will be a boy.
A. The null hypothesis is
i. p < 0.5"
ii. p > 0.5"
iii. p = 0.5"
iv. p is not equal to 0.5"
B. The computed z-test statistic is
i. 9.54
ii. 7.81
iii. 10.96
iv. 8.39
C. The critical/tabular z-test statistic is
i. 2.58
ii. 2.33
iii. 1.645
iv. 1.96
D. Decision rule:
i. Reject the null hypothesis.
ii. Do not reject the null hypothesis.
E. The final conclusion is
i. The YSORT method designed to NOT decrease the probability of a boy.
ii. The YSORT method designed to NOT increase the probability of a boy.
iii. The YSORT method designed to increase the probability of a boy.
iv. The YSORT method designed to decrease the probability of a boy.
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