It is reported that 23% of the home mortgages in Cowlitz County are "underwater". For 50 randomly selected home mortgages, compute the expected number of underwater mortgages.

a. 12.9

b. 14.2

c. 9.6

d. 10.1

e. 11.5

The expected value or mean of a Poisson distribution is equal to:

a. the variance of the distribution.

b. the standard deviation of the distribution.

c. the negative square root of the variance of the distribution.

d. the number of occurrences multiplied by its probability.

e. none of the above