Answer Happy

Suppose taxpayers calling the IRS in 2017 waited 13 minutes on average for an IRS telephone assister to answer De callers who use the IRS help line early in the day have a shorter wat? Suppose a sample of 20 calers who placed the calls to the IRS in the first 30 minutes that the line is open during the day have a mean waiting time of 11 minutes before an IRS telephone assister answers. Besed on data from past years, you decide that it is reasonable to assume that the standard deviation of waiting times is 8 minutes. Using these sample results, can you conclude that the waiting time for calls placed during the first 30 minutes the DRS help line is open each day is significantly less that the overall mean waiting time of 13 minutes? Use 0.05 State the null and alternative hypotheses. Enter for as needed.) My Find the value of the state. (Round your answer to be decimal places) Find the pand yours.) State your conn 5 tip Reject We cannot conclude that callers who use the 15 help in early in the day have a shorter Do not reject we cannot include that caters who use the IRS help line early in the day have a short wa De not reject we can conclude that caters who use the IRS teto ne early in the day have a shorter wit