Jeffrey, as an eight-year-old, established a mean time of 16.43 seconds for swimming
Subject: Probability and Statistics
Complete Question given below
Question 32 #shorts
Question
Jeffrey, as an eight-year-old, established a mean time of 16.43 seconds for swimming the 25-yard freestyle, with a standard deviation of 0.8 seconds. His dad, Frank, thought that Jeffrey could swim the 25-yard freestyle faster using goggles. Frank bought Jeffrey a new pair of expensive goggles and timed Jeffrey for 15 25-yard freestyle swims. For the 15 swims, Jeffrey's mean time was 16 seconds. Frank thought that the goggles helped Jeffrey to swim faster than the 16.43 seconds. Conduct a hypothesis test using a preset a = 0.05. Assume that the swim times for the 25-yard freestyle are normal. What is the p-value for this test?
A.-2.082
B.0.0188
C.0.188
D.Not enough information is provided.
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