Answer to Question #342934 in Statistics and Probability for ...

Question #342934

The average age of public jeepneys playing in Metro Manila is 15 years. Assume that the standard deviation is 4 years. If a random sample of 64 public jeepneys is chosen, find the probability that the mean of jeepneys ages is Between 12 to 19 years

1
Expert's answer
2022-05-23T08:45:58-0400
"P(12<X<19)=P(Z<\\dfrac{19-15}{4\/\\sqrt{64}})"

"-P(Z\\le\\dfrac{12-15}{4\/\\sqrt{64}})"

"=P(Z<8)-P(Z\\le-6 )"

"\\approx 1-0=1"


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