The percentage of female CEOs in 2013 in Fortune 500 companies was 4%, according to Time Magazine (March 18, 2013). Suppose a student did a survey of 250 randomly selected large companies (not Fortune 500 companies), and 15 of them had women CEOs. In Exercise 8.30 you carried out the first two steps to test the hypothesis that the population proportion is not 0.04. Now carry out the last two steps, using the computer output provided and a significance level of 0.05.
Answer to relevant QuestionsFor each graph, indicate whether the shaded area could represent a p-value. Explain why or why not. If yes state whether the area could represent the p-value for a one-sided or a two-sided alternative hypothesis. Some experts believe that 20% of all freshwater fish in the United States have such high levels of mercury that they are dangerous to eat. Suppose a fish market has 250 fish tested, and 60 of them have dangerous levels of ...A person spinning a 1962 penny gets 10 heads out of 50 spins. Because she gets a p-value of 0.00002, she says she has proved the coin is biased. What is the flaw in the statement and how would you correct it? A study used nicotine gum to help people quit smoking. The study was placebo-controlled, randomized, and double-blind. Each participant was interviewed after 28 days, and success was defined as being abstinent from ...A student who claims he can tell cola A from cola B is blindly tested with 20 trials. At each trial, cola A or cola B is randomly chosen and presented to the student, who must correctly identify the cola. The experiment is ...
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