The budgeting Web site HelloWallet reported that 25% of U. S. households have withdrawn money from a
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The budgeting Web site HelloWallet reported that 25% of U. S. households have withdrawn money from a 401(k) or other retirement account for needs other than retirement in 2013. A random sample of 11 U. S. households was selected.
a. What is the probability that exactly two households withdrew funds from a retirement account for needs other than retirement?
b. What is the probability that less than three households withdrew funds from a retirement account for needs other than retirement?
c. What is the probability that more than five households withdrew funds from a retirement account for needs other than retirement?
d. What are the mean and standard deviation for this distribution? e. Construct a histogram for this distribution.
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