Teen drivers (those aged 15-19) spend an average of 45 minutes behind the wheel each day. Assume that the standard deviation is known to be 12.5 minutes. You randomly select 45 teenage drivers. d) You take a random sample of 45 teen drivers and want to find the probability that the mean time they spend driving each day is less than 24.5 minutes. What z-score should you use? (give your answer to 3 decimal places) e) You take a random sample of 45 teen drivers. What is the probability that the mean time they spend driving each day is less than 24.5 minutes? (give your answer to 4 decimal places)
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Teen drivers (those aged 15-19) spend an average of 45 minutes behind the wheel each day. Assume that the standard deviation is known to be 12.5 minutes. You randomly select 45 teenage drivers.
d) You take a random sample of 45 teen drivers and want to find the
e) You take a random sample of 45 teen drivers. What is the probability that the mean time they spend driving each day is less than 24.5 minutes? (give your answer to 4 decimal places)
From the provided information,
Mean (µ) = 45
Standard deviation (σ) = 12.5
X~N (45, 12.5)
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