Find the area under the standard normal curve between -1.48 and the mean.

Find the area under the standard normal curve between -1.48 and the mean.

Q. 2

Explain why nonempty, mutually exclusive events A and B must be dependent.

Q. 3

Find the area under the standard normal curve to the left of z = 1.93.

Q. 4

A box contains five red, three blue, and two white poker chips. Two are selected without replacement. Find the probability that both are the same color.

Q. 5

Find the area under the standard normal curve to the right of z = 2.12.

Q. 6

Events A and B are defined on a common sample space. If P(A) = 0.7, P(B) = 0.6, and A and B are independent events, find P(A or B).

Q. 7

Find the z-scores that bound the middle 75 of the standard normal distribution.

Q. 8

Events A and B are mutually exclusive events defined on a common sample space. If P(A) = 0.4 and P(A or B) = 0.9, find P(B).