1. A random sample of 68 households was selected for a phone survey. The key question asked was, "Do you or any member of your household own a product from Company A?" Of the 6 respondents, 34 said yes and 34

said no.

a. Determine the sample proportion, p, of households that own a Company A product.

b. If the population proportion is 0.75, determine the standard error of the proportion

2. Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a recent year. Suppose a sample of 100 major league players was taken. What was the standard error for the sample mean salary?

A. $0.012 million

B. $0.12 million

C. $12 million

D. $1,200.0 million

3. What do millennials around the world want in a job? A Deloitte survey of millennials on work-life challenges found that millennials are looking for stability in an uncertain world, with 64% of millennials preferring a permanent, full-time job rather than working freelance or as a consultant on a flexible or short-term basis. Suppose you select a sample of 100 millennials. Answer parts (a) through (d).

A. What is the probability that in the sample fewer than 68% prefer a permanent, full-time job?

B. What is the probability that in the sample between 59% and 68% prefer a permanent, full-time job?

C. What is the probability that in the sample more than 66% prefer a permanent, full-time job?

D. If a sample of 400 is taken, how does this change your answers to (a) through (c)?

a. The probability that in the sample fewer than 68% prefer a permanent, full-time job is nothing ___

b. The probability that in the sample between 59% and 68% prefer a permanent, full-time job is nothing ____

c. the probability that in the sample more than 66% prefer a permanent, full-time job is _