Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 90 people in the 18-21 age bracket and finds that 76 of them respond and 14 refuse to respond. Whe 254 people in the 22-29 age bracket are contacted, 232 respond and 22 refuse to respond. Assume that 1 of the 344 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who refused to respond. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(18-21 or refused) = %3D (Hint: It might be helpful to organize the data into a table first.) Question Help: e Written Example Message instructor

In a recent poll of voters, 20% were displeased with both candidates. If 3 people were picked at random. find the probability that at least one liked one of the candidates.

Fewer young people are driving. In 1995, 63.9% of people under 20 years old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to 41.7% in 2016. Suppose these results are based on a random sample of 1,200 people under 20 years old who were eligible to have a driver's license in 1995 and again in 2016.

. If tossing a loaded coin gives heads 60% of times, what is the likelihood (probability) of observing heads 50 times or fewer out of 100 tosses? 12 The probability of observing heads 50 times or fewer out of 100 would be 0.03 or 3 percent. use excel.

A national sports equipment co-op is going to conduct a survey of its members. It knows from collecting data when members join that 68% of them identify as male. Assuming the total number of members is very large and 200 of them are randomly selected to take the survey, what’s the chance less than 60% of these randomly chosen members identify as male? Show all your work and write your answer as a percentage.

A survey showed that 71​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. If 8 adults are randomly​ selected, find the probability that at least 7 of them need correction for their eyesight. Is 7 a significantly high number of adults requiring eyesight​ correction?

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.