Solution) The Employee Benefit Research Institute reports that 69% of all workers reported that they had saved


Question: The Employee Benefit Research Institute reports that 69% of all workers reported that they had saved some money for retirement. Assuming that 5 people are randomly selected, find the following based on the table below.

Problem 12.PNG

a. In creating the binomial table above, what values were used for n and p?

b. What must the sum of the “exactlies” add up to?

c. What is the probability that 0 people had saved for retirement?

d. What is the probability that less than 2 had saved for retirement?

e. What is the probability that 2 or more had saved for retirement?

f. What is the probability that 3 or more had saved for retirement?

g. Graph the binomial distribution with a histogram. Label your axes.

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