You randomly select 100 drivers ages 15 to 19 from Example 4. What is the probability that
Question:
You randomly select 100 drivers ages 15 to 19 from Example 4. What is the probability that the mean time they spend driving each day is between 24.7 and 25.5 minutes? Use μ = 25 minutes and σ = 1.5 minutes.
a. Use the Central Limit Theorem to find μx̅ and σx̅ and sketch the sampling distribution of the sample means.
b. Find the z-scores that correspond to x̅ = 24.7 minutes and x̅ = 25.5 minutes.
c. Find the cumulative area that corresponds to each z-score and calculate the probability that the mean time spent driving is between 24.7 and 25.5 minutes.
d. Interpret the results.
Example 4
DistributionThe word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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