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The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.6 minutes. 14 runners are randomly selected to
The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.6 minutes. 14 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution.
- What is the distribution of XX? XX ~ N(Correct,Correct)
- What is the distribution of xx? xx ~ N(Correct,Correct)
- What is the distribution of xx? xx ~ N____,_______)
- If one randomly selected runner is timed, find the probability that this runner's time will be between 20.2576 and 21.2576 minutes.
- For the 14 runners, find the probability that their average time is between 20.2576 and 21.2576 minutes.
- Find the probability that the randomly selected 14 person team will have a total time less than 273.
- For part e) and f), is the assumption of normal necessary? NoYes
- The top 15% of all 14 person team relay races will compete in the championship round. These are the 15% lowest times. What is the longest total time that a relay team can have and still make it to the championship round? minutes
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