Question

Approximately 45% of Baby Boomers—those born between 1946 and 1964—are still in the workforce (www.pewresearch.org, May 11, 2015). Six Baby Boomers are selected at random.

a.What is the probability that exactly one of the Baby Boomers is still in the workforce?

b.What is the probability that at least five of the Baby Boomers are still in the workforce?

c.What is the probability that less than two of the Baby Boomers are still in the workforce?

Page 184

d.What is the probability that more than the expected number of the Baby Boomers are still in the workforce?

what is the standard deviation?

	a.	1.485
	b.	2.7
	c.	1.643
	d.	1.218

what is the mean?

	a.	3.3
	b.	2.7
	c.	6
	d.	1.485

Which one is the parameter of a binomial distribution? Choose all applied.

	a.	mean of the process
	b.	population size
	c.	probability of sucess
	d.	sample size

Which one is the characteristics of Bernoulli process? Choose all applied.

	a.	There are only two outcomes, success or failure.
	b.	Probability of success remains the same from trial to trial.
	c.	Probability of success is based on size.
	d.	The number of successes within a specified time or space interval equals any integer.

Which one is the binomial process? Choose all applied.

	a.	Checking how many accidents per day in a town.
	b.	Tossing a coin 10 times and see the number of heads showed up.
	c.	Survey 100 students to see how many of them has the student loans.
	d.	Checking 200 pencils to see how many of them are defected.

Answer 1