Question
A small market orders copies of a certain magazine for its magazine rack each week. Let X=X= demand for the magazine, with pmf
x p(x)
1 1/15
2 2/15
3 3/15
4 4/15
5 3/15
6 2/15
Suppose the store owner actually pays $ 1.25 for each copy of the magazine and the price to customers is $ 3.75. If magazines left at the end of the week have no salvage value, calculate the expected profit.
Question
1. An article about women in business claims that 28% of all small businesses in the United States are owned by women. Sally Parks believes that this figure is overstated. A random sample of 2,000 small businesses is selected with 546 being owned by women. Does the sample data provide evidence to conclude that less than 28% of small businesses in the United States are owned by women (with a = .10)?
2. The U.S. Bureau of Labor Statistics states that workers in the private sector earn a mean on $10.33 an hour for their first job. A labor economist selects a random sample of 400 private sector workers. This resulted in the following. Sample Size = 400 Sample Mean = $10.68 Sample Standard Deviation = $2.70 Does the sample data provide evidence that the mean hourly wage for private sector workers for their first job is greater than $10.33 (using a = .10)? Use the hypothesis testing procedure outlined below.