For each example below, determine which claim is the null hypothesis and which is the alternative hypothesis. Also, specify the parameter and give the null value and point estimate. a) The article...

Extracted text: For each example below, determine which claim is the null hypothesis and which is the alternative hypothesis. Also, specify the parameter and give the null value and point estimate. a) The article "Boy or Girl: Which Gender Baby Would You Pick?" (LiveScience, March 23, 2005, www.livescience.com ) summarized a study that was published in Fertility and Sterility. From the study, we have the following claims: • Claim A: The proportion of women who would choose a girl is 50%. • Claim B: The proportion of women who would choose a girl is not 50%. To test these claims, a survey with 19 questions was mailed to 1,385 women. Of the 229 who wanted to select the baby's sex, 89 (or 38.9%) wanted a boy and 140 (or 61.1%) wanted a girl. The null hypothesis is Claim A V and the alternative hypothesis is Claim B V The parameter of interest is a proportion The null value is .5 and the point estimate is b) Do people who work long hours have more trouble sleeping? This question was examined in the paper "Long Working Hours and Sleep Disturbances: The Whitehall II Prospective Cohort Study" (Sleep [2009]: 737-745). From the study, we have the following claims: • Claim A: The proportion of workers who usually get less than 7 hours of sleep at night is different for those who work more than 40 hours a week and those who work 35-40 hours a week. • Claim B: The proportion of workers who usually get less than 7 hours of sleep at night is the same for those who work more than 40 hours a week and those who work 35-40 hours a week. To test these claims, 2459 workers were questioned, with 750 out of 1501 workers who work more than 40 hours a week saying they usually get less than 7 hours of sleep a night and 407 out of 958 works who work 35-40 hours a week saying they usually get less than 7 hours of sleep a night. The null hypothesis is Claim B Y and the alternative hypothesis is Claim A- The parameter of interest is a difference of proportions The null value is 0 and the point estimate is