II – PROBLEM SOLVING:(week 7)
1. The average public high school has 468
students with a standard deviation of
87.
a) If a public school is selected, what
is the probability that the number of
students enrolled is greater than
400?
b) If a random sample of 38 public
elementary schools is selected, what
is the probability that the number of
students enrolled is between 445
and 485?
(a)
(b)n=30,
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