SOLUTION: Given the normal distribution of children's ages in a preschool educational program where the mean is 4 years and the standard deviation is 1 year, what is the probability of rando

Question 778331: Given the normal distribution of children's ages in a preschool educational program where the mean is 4 years and the standard deviation is 1 year, what is the probability of randomly selecting an age between 4 and 5? what is the z standard score of an age 5? what is the percentage of ages 5 and over? what is the probability of randomly selecting an age 2 and under?

Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
First calculate the Z-score.

For 5 yrs age the Z-score is
For 4 yrs age the Z-score is

The probability that the age of children is less than 5 years is

The probability that the age of children is less than 5 years is

Using Standard Normal Distribution table, probability that the age of children lie between 4 and 5 years is given by

Try the rest yourself. If you still need help then let me know.
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