Question

The average time a visitor spends at the Renzie Park Art Exhibit is 62 minutes. The standard deviation is 12 minutes. If a visitor is selected at random, find the probability that he or she will spend:

A)At least 82 minutes at the exhibit
B)At most 50 minutes at the exhibit




The average time a person spends at Barefoot Landing Seaquarium is 96 minutes. The standard deviation is 17 minutes. Assume the variable is normally distributed. If a visitor is selected at random, find the probability that he or she will spend:

A)At least 120 minutes at the exhibit
B)At most 80 minutes at the exhibit

Answer 1

X - Average time a visitor spends at the Renzie Park Art Exhibit is N(62, 12)

a) P(X>=82) = P(Z>=1.67)

=0.0475

= 4.75%

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b) P(X<50) = P(Z<-1) =

0.1587

=15.87%