# Question

According to a survey by consulting firm Watson Wyatt, approximately 19% of employers have eliminated perks or plan to do so in the next year (Kiplinger’s Personal Finance , February 2009). Suppose 30 employers are randomly selected.

a. What is the probability that exactly ten of the employers have eliminated or plan to eliminate perks?

b. What is the probability that at least ten employers, but no more than 20 employers, have eliminated or plan to eliminate perks?

c. What is the probability that at most eight employers have eliminated or plan to eliminate perks?

a. What is the probability that exactly ten of the employers have eliminated or plan to eliminate perks?

b. What is the probability that at least ten employers, but no more than 20 employers, have eliminated or plan to eliminate perks?

c. What is the probability that at most eight employers have eliminated or plan to eliminate perks?

## Answer to relevant Questions

Studies have shown that bats can consume an average of ten mosquitoes per minute (berkshiremuseum.org).a. Calculate the average number of mosquitoes that a bat consumes in a 30-second interval.b. What is the probability that ...Consider the following cumulative probability distribution.a. Calculate P(X ≤ 3).b. Calculate P(X = 3).c. Calculate P(2 ≤ X ≤4)An investor considers investing $10,000 in the stock market. He believes that the probability is 0.30 that the economy will improve, 0.40 that it will stay the same, and 0.30 that it will deteriorate. Further, if the economy ...According to the Department of Transportation, 27% of domestic lights were delayed in 2007 (Money, May 2008). At New York’s John F. Kennedy Airport, five lights are randomly selected.a. What is the probability that all ...A random variable X follows the continuous uniform distribution with a lower bound of -2 and an upper bound of 4. a. What is the height of the density function f (x)? b. What are the mean and the standard deviation of the ...Post your question

0