Which of the following is the expected number that will be vaccinated in such a random sample of 8 people (including an appropriate symbol and units)?

Federal health officials estimate that 67% of all those over age 65 receive the flu vaccine. Suppose 8 people over 65 will be randomly selected.

Which of the following is the expected number that will be vaccinated in such a random sample of 8 people (including an appropriate symbol and units)?

·          μ = 5 people

·          μ = 5.36 people

·          xbar = 5 people

·          xbar = 5.36 people 

What is the probability that exactly 5 people in the sample wlil have been vaccinated?