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The director of the IRS has been flooded with complaints thatpeople must wait more than 45 minutes before seeing an IRSrepresentative. To determine the validity of these complaints, theIRS randomly selects 400 people entering IRS offices across thecountry and records the times that they must waitbefore  seeing an IRS representative. The average waitingtime for the sample is 55 minutes with a standard deviation of 15minutes.

Are the complaints substantiated by the data at alpha level of0.10?

**** Please include all these Steps inorder****

Step 1 : Define the hypothesis to be tested for Null hypothesisand Alternative hypothesis.

Step 2: Select the appropriate statistical measure, such as thepopulation mean, proportion, or variance

Step 3: Determine whether the alternative hypothesis should beone-sided or two-sided.

Step 4: State the hypotheses using the statistical measure foundin Step 2

Step 5: Specify ?, the level of the test. ? =_______

Step 6: Select the appropriate test statistic based on theinformation at hand and the assumptions you willing to make. Normaldistribution

Step 7 : Determine the critical value of the test statistic

Step 8: Collect sample data and compute the value of the teststatistic.

Step 9: Make the decision

Step 10 : State the conclusion in terms of the originalquestion