A group of human factor researchers are concerned about reaction to a stimulus by airplane pilots in a certain cockpit arrangement. An experiment was conducted in a simulation laboratory, and
15
pilots were used with an average reaction time of
3.1
seconds with a sample standard deviation of
0.8
second. It is of interest to characterize the extreme (that is, the worst-case scenario). To that end, complete parts (a) through (c) below.
Extracted text: A group of human factor researchers are concerned about reaction to a stimulus by airplane pilots in a certain cockpit arrangement. An experiment was conducted in a simulation laboratory, and 15 pilots were used with an average reaction time of 3.1 seconds with a sample standard deviation of 0.8 second. It is of interest to characterize the extreme (that is, the worst-case scenario). To that end, complete parts (a) through (c) below. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. Click here to view the table of tolerance factors for normal distributions. Give a particular important one-sided 95% confidence bound on the mean reaction time. What assumption, if any, must you make on the distribution of reaction times? The one-sided 95% confidence interval is u< (round to three decimal places as needed.) what assumption, if any, needs to be made for the confidence interval in the previous step? o a. the population is normally distributed. o b. the population variance is known. oc. the sample is normally distributed. o d. no assumption is needed. (round="" to="" three="" decimal="" places="" as="" needed.)="" what="" assumption,="" if="" any,="" needs="" to="" be="" made="" for="" the="" confidence="" interval="" in="" the="" previous="" step?="" o="" a.="" the="" population="" is="" normally="" distributed.="" o="" b.="" the="" population="" variance="" is="" known.="" oc.="" the="" sample="" is="" normally="" distributed.="" o="" d.="" no="" assumption="" is=""> (round to three decimal places as needed.) what assumption, if any, needs to be made for the confidence interval in the previous step? o a. the population is normally distributed. o b. the population variance is known. oc. the sample is normally distributed. o d. no assumption is needed.>