Asked by AMbe
2. The average age of a child in kindergarten is 66 months. The standard deviation is 4 months. If a random child is selected, find the probability that the mean age is:
a) Between 64 and 68 months
b) Greater than 62 months
a) Between 64 and 68 months
b) Greater than 62 months
Answers
Answered by
MathMate
You need to <i>assume</i> that the age distribution is normal.
Again, normalize the data which have a distribution of ~N(66,4²) and compute probabilities based on the looked up probabilities.
Again, normalize the data which have a distribution of ~N(66,4²) and compute probabilities based on the looked up probabilities.
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