A TV newscaster reports the results of a poll of voters, and then says, "The margin of error is plus or minus 4%." Explain carefully what that means.

Wildlife biologists inspect 153 deer taken by hunters and find 32 of them carrying ticks that test positive for Lyme disease.

What concerns do you have about this sample?

Wildlife biologists inspect 153 deer taken by hunters and find 32 of them carrying ticks that test positive for Lyme disease. What concerns do you have about this sample?

An urn contains one white chip and one black chip. A chip is drawn at random. If it is white, the “game” is over; if it is black, that chip and another black one are put into the urn. Then another chip is drawn at random from the “new” urn and the same rules for ending or continuing the game are followed (i.e., if the chip is white, the game is over; if the chip is black, it is placed back in the urn, together with another chip of the same color). The drawings continue until a white chip is selected. Show that the expected number of drawings necessary to get a white chip is not finite.

Wildlife biologists inspect 153 deer taken by hunters and find 32 of them carrying ticks that test positive for Lyme disease. If the scientists want to cut the margin of error in half, how many deer must they inspect?

Wildlife biologists inspect 153 deer taken by hunters and find 32 of them carrying ticks that test positive for Lyme disease.

If the scientists want to cut the margin of error in half how many deer must they inspect?

$9342$ is usually thought of as $9$ thousands, $3$ hundreds, $4$ tens, and $2$ ones, but in subtracting $6457$ from $9342$ using the customary algorithm, we regroup and think of $9342$ as ___ thousands, ___ hundreds, ____ tens, and ___ ones.

During a rights offering, the underlying stock is said to sell “rights-on” and “ex-rights.” Explain the meaning of these terms and their significance to current stockholders and potential stockholders.

Texas legislative elections in the general cycle choose a plurality winner. What is required to win?

Decide whether the set of ordered pairs represents a function from A to B. A={0, 1, 2, 3}, B={-2, -1, 0, 1, 2}. {(0, 2), (3, 0), (1, 1)}.

The Spike network commissioned a telephone poll of randomly sampled U.S. men. Of the 712 respondents who had children, 22% said “yes” to the question “Are you a stay-at-home dad?” (Time, August 23, 2004) a) To help market commercial time, Spike wants an accurate estimate of the true percentage of stay-at-home dads. Construct a 95% confidence interval. b) An advertiser of baby-carrying slings for dads will buy commercial time if at least 25% of men are stay-at-home dads. Use your confidence interval to test an appropriate hypothesis, and make a recommendation to the advertiser. c) Could Spike claim to the advertiser that it is possible that 25% of men with young children are stay-at-home dads? What is wrong with the reasoning?

Which statement accurately describes chloasma?

A specialty foods company sells "gourmet hams" by mail order. The hams vary in size from 4.15 to 7.45 pounds, with a mean weight of 6 pounds and standard deviation of 0.65 pounds. The quartiles and median weights are 5.6, 6.2, and 6.55 pounds. a) Find the range and the IQR of the weights. b) Do you think the distribution of the weights is symmetric or skewed? If skewed, which way? Why? c) If these weights were expressed in ounces (1 pound = 16 ounces) what would the mean, standard deviation, quartiles, median, IQR, and range be? d) When the company ships these hams, the box and packing materials add 30 ounces. What are the mean, standard deviation, quartiles, median, IQR, and range of weights of boxes shipped (in ounces)? e) One customer made a special order of a 10-pound ham. Which of the summary statistics of part d might not change if that data value were added to the distribution?

What is a difference between a PAC and a super PAC?

a. PACs can contribute directly to candidates, but super PACs cannot.

b. Conservative interests favor PACs over super PACs.

c. Contributions to PACs are unlimited, but restrictions have been placed on how much money can be contributed to super PACs.

d. Super PACS are much more likely to support incumbent candidates than are PACs.