Calculate probability that exactly 12 people believed the

Reference no: EM13391336

In July 2001, 45% of Americans believed the country was in a recession even though, technically, the economy had not shown two straight quarters of negative growth. For a sample of 20 Americans, make the following calculations (assume each person's belief in recession is independent of the others):

a. Compute the probability that exactly 12 people believed the country was in a recession.

b. Compute the probability that at least one person believed the country was in a recession.

c. How many people would you expect to say the country was in a recession?

d. Compute the variance and standard deviation of the number of people who believed the country was in a recession.

Reference no: EM13391336

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