Question

The director of the irs has been flooded with complaints that people must wait more than 50 minutes before seeing an irs representative. to determine the validity of these complaints, the irs randomly selects 450 people entering irs offices across the coutnry and records the rimes which they must wait before seeing an irs representative. the average waiting time for the sample is 51 minutes with a standard deviation of 2 minutes. is there overwhelming evidence to support the claim that the wai time to see an irs representative is more than 50 minutes at a 0.050 signfiance level?

Step 1: find the value of the test statistic. round your answer to three decimal places if necassary

STep 2: Is there overwheliming evidence to support the claim that the wait time to see an irs repesentiave is more than 50 minutes at a 0.050 significance level? state your conclusion in the contest of the orignaal problem.

Step 3: choose the best option below

The test was neither statistically nor practiacally signficance

the test was both statically and practically significant

although the test was statistcailly significant there is no practi al difference bettwe na wait time of 50 minutes and 51 min

Although the test was not statiscally signficant there is a partical difference between a wait tine of 50 min and 51 min

Answer 1

50.00	hypothesized value
51.00	mean 1
2.00	std. dev.
0.09	std. error
450	n
449	df
10.607	t
6.61E-24	p-value (one-tailed, upper)

Step 1: find the value of the test statistic. round your answer to three decimal places if necassary

10.607

STep 2: Is there overwheliming evidence to support the claim that the wait time to see an irs repesentiave is more than 50 minutes at a 0.050 significance level? state your conclusion in the contest of the orignaal problem.

Yes

Step 3: choose the best option below

although the test was statistcailly significant there is no practi al difference bettwe na wait time of 50 minutes and 51 min