# Question: The file P02 16 xlsx contains traffic data from 256 weekdays on

The file P02_16.xlsx contains traffic data from 256 weekdays on four variables. Each variable lists the number of arrivals during a specific 5-minute period of the day. For this problem, consider this data set a simple random sample from all possible weekdays.

a. For each of the four variables, find the sample mean. If each of these is used as an estimate from the corresponding (unknown) population mean, is there any reason to believe that they either underestimate or overestimate the population means? Why or why not?

b. What are the (approximate) standard errors of the estimates in part a? How can you interpret these standard errors? Be as specific as possible.

c. Is it likely that the estimates in part a are accurate to within 0.4 arrival? Why or why not?

a. For each of the four variables, find the sample mean. If each of these is used as an estimate from the corresponding (unknown) population mean, is there any reason to believe that they either underestimate or overestimate the population means? Why or why not?

b. What are the (approximate) standard errors of the estimates in part a? How can you interpret these standard errors? Be as specific as possible.

c. Is it likely that the estimates in part a are accurate to within 0.4 arrival? Why or why not?

## Answer to relevant Questions

The file P02_35.xlsx contains data from a survey of 500 randomly selected households. For this problem, consider this data set a simple random sample from all possible households, where the number of households in the ...The file DVD Movies.xlsx contains a large data set of 10,000 customer transactions for a fictional chain of video stores in the United States. Each row corresponds to a different customer and lists (1) A customer ID number ...The manager of a local fast-food restaurant is interested in improving the service provided to customers who use the restaurantâ€™s drive-up window.As a first step in this process, the manager asks an assistant to record the ...The employee benefits manager of a large public university would like to estimate the proportion of full-time employees who prefer adopting the first (plan A) of three available health care plans in the next annual ...A company employs two shifts of workers. Each shift produces a type of gasket where the thickness is the critical dimension. The average thickness and the standard deviation of thickness for shift 1, based on a random sample ...Post your question