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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