Employees with their jobs the wall street journal a

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employees with their jobs ( The Wall Street Journal , January 29, 2007). A total of 473 employees indicated they strongly disliked their current work experience. a. What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience? b. At 95% confidence, what is the margin of error? c. What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience? d. Towers Perrin estimates that it costs employers one-third of an hourly employee’s annual salary to find a successor and as much as 1.5 times the annual salary to find a successor for a highly compensated employee. What message did this survey send to employers? 4. A study by Consumer Reports showed that 64% of supermarket shoppers believe Super market brands to be as good as national name brands. To investigate whether this result applies to its own product, the manufacturer of national name-brand ketchup asked a sample of shoppers whether they believed that supermarket ketchup was as good as the national brand ketchup. a. Formulate the hypotheses that could be used to determine whether the percentage of supermarket shoppers who believe that the supermarket ketchup was as good as the national brand ketchup differed from 64%. b. If a sample of 100 shoppers showed 52 stating that the supermarket brand was as good
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as the national brand, what is the p-value?
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