1. True or False? In Exercises 1 and 2, determine whether the statement is true or false. If it is false, rewrite it as a true statement.
1. To estimate the value of p, the population proportion of successes, use the point estimate x.
2. The point estimate for the population proportion of failures is 1 - np.
2. Finding np and nq In Exercises 3 – 6, let p be the population proportion for the situation. Find point estimates of p and q.
3. Environment In a survey of 1002 U.S. adults, 662 think that humans have had a mostly negative impact on the environment over the last 10 years. (Adapted from Washington Post Poll)
4. Charity In a survey of 2939 U.S. adults, 2439 say they have contributed to a charity in the past 12 months. (Adapted from Harris Interactive)
5. Computers In a survey of 11,605 parents, 4912 think that the government should subsidize the costs of computers for lower-income families. (Adapted from DisneyFamily.com)
6. Vacation In a survey of 1003 U.S. adults, 110 say they would go on vacation to Europe if cost did not matter.