Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 75 people in the 18-21 age bracket and finds that 64 of them respond and 11 refuse to respond. When 313 people in the 22-29 age bracket are contacted, 289 respond and 24 refuse to respond. Assume that 1 of the 388 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket OR someone who refused to respond. Report the answer as a percent rounded to one decimal place accuracy.

What is the value of x when x + 7 = 21?

Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days