Suppose an actual census showed that 18.4% of the households in California have incomes in excess of $50,000. The probability that the sample proportion will be 0.22 or greater for a random sample of 750 households is:

a. 0.0055.

b. 0.9945.

c. 0.9949.

d. 0.0041.

e. not enough information given for estimation.