Mathematics, 12.03.2021 18:40 SuperWoman9172
TIMED PLEASE HELP
Alex's times for running a mile are Normally distributed with a mean time of 5.28 minutes and a standard deviation
of 0.38 seconds. Chris's times for running a mile are Normally distributed with a mean time of 5.45 seconds and a
standard deviation of 0.2 seconds. Ten of Alex's times and 15 of Chris's times are randomly selected. Let 5-7
represent the difference in the mean times for Alex and Chris. Which of the following represents the standard
deviation of the sampling distribution for 3-7?
0 0.09
0 0.13
O 0.17
O 0.18
Answers: 1
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Alex's times for running a mile are Normally distributed with a mean time of 5.28...
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