Use the following information to answer the exercise: A recent poll concerning credit cards found that 35 percent of respondents use a credit card that gives them a mile of air travel for every dollar they charge. Thirty percent of the respondents charge more than $2,000 per month. Of those respondents who charge more than $2,000, 80 percent use a credit card that gives them a mile of air travel for every dollar they charge. What is the probability that a randomly selected respondent will spend more than $2,000 AND use a credit card that gives them a mile of air travel for every dollar they charge? a. (0.30)(0.35) b. (0.80)(0.35) c. (0.80)(0.30) d. (0.80)

A pew research center survey asked adults in the United States which technology would be very hard to give up. The following responses were obtained internet 70% smart phone 60% email 30% and land line 25%. If 20 adults internet uses are surveyed what is the probability that 3 users will report that it would be very hard to give up?

Diet Dr.Pepper is going old school and putting a "Free DP" notification under 10% of their 20-oz bottle caps. If I purchase a 6-pack of 20-oz bottles, what is the probability that I win at least two free drpeppers?

The president of Doerman Distributors, Inc. believes that 30% of the firm's orders come from first-time customers.  A random sample of 100 orders will be used to estimate the proportion of first-time customers.  What is the probability that the sample proportion will be within .05?

A study showed that in​ 1990, 47​% of all those involved in a fatal car crash wore seat belts. Of those in a fatal crash who wore seat​ belts, 46​% were injured and 26​% were killed. For those not wearing seat​ belts, the comparable figures were 43​% and 51​%, respectively. Find the probability that a randomly selected person who was unharmed in a fatal crash was not wearing a seat belt.

In a recent survey, it was found that the meadian income of families in country A was $57,100. What is the probability that a randomly selected family has an income less than $57,100

Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when they got their tattoos. Assume that ten adults who regret getting tattoos are randomly​ selected, and find the indicated probability. a.  Find the probability that none of the selected adults say that they were too young to get tattoos.