A budgeting Web site reported that 20% of U.S.

Question
A budgeting Web site reported that 20% of U.S. households have withdrawn money from a401(k) or other retirement account for needs other than retirement in 2013. A random sample of11U.S. households was selected. Complete parts a through e below.

a. What is the probability that exactly four households withdrew funds from a retirement account for needs other than retirement?

The probability is _____. (Round to four decimal places as needed.)

b. What is the probability that less than six households withdrew funds from a retirement account for needs other than retirement?
The probability is _____. (Round to four decimal places as needed.)

c. What is the probability that more than seven households withdrew funds from a retirement account for needs other than retirement?

The probability is ______. (Round to four decimal places as needed.)

d. What are the mean and standard deviation for this distribution?

The mean for this distribution is _____. (Type an integer or a decimal.)

The standard deviation for this distribution is nothing. (Round to four decimal places asneeded.)

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