The director of the IRS has been flooded with complaints that people must wait more than 55 minutes before seeing an IRS representative. To determine the validity of these complaints, the IRS randomly selects 400 people entering IRS offices across the country and records the times which they must wait before seeing an IRS representative. The average waiting time for the sample is 57 minutes with a standard deviation of 3 minutes. Is there overwhelming evidence to support the claim that the wait time to see an IRS representative is more than 55 minutes at a 0.005 significance level? Step 1 of 3: Find the value of the test statistic. Round your answer to three decimal places, if necessary. Answer Tables Keypad Keyboard Shortcuts

The director of the IRS has been flooded with complaints that people must wait more than 55 minutes before seeing an IRS representative. To determine the validity of these complaints, the IRS randomly selects 400 people entering IRS offices across the country and records the times which they must wait before seeing an IRS representative. The average waiting time for the sample is 57 minutes with a standard deviation of 3 minutes. Is there overwhelming evidence to support the claim that the wait time to see an IRS representative is more than 55 minutes at a 0.005 significance level? Step 1 of 3: Find the value of the test statistic. Round your answer to three decimal places, if necessary. Answer Tables Keypad Keyboard Shortcuts

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 3GP

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