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STAT 245 (10)

# Rev 4.pdf

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School
Department
Statistics
Course
STAT 245
Professor
William Laverty
Semester
Winter

Description
Review Questions 4 for Final ExamILetX be the time it takes a runner to complete a 1500 meter raceIt is known that for this specific runner the random variable X has a normal distribution with mean 2500 seconds and standard deviation 65 secondsCompute the the probability thataThe runner completes his next 1500 meter race in under 4 minutesbThe runner takes between 245 and 252 seconds to complete his next 1500 meter racecIn the next n5 races the runners average time to complete the race is under 252 secondsdIn the next n3 races the runners average time to complete the race is between 245and 254 secondseIn the next n5 races the runner beats the time of 245 seconds exactly 3 timesfIn the next n5 races the runner beats the time of 245 seconds at least 4 timesIITable I1
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