About 73% of the residents in a town say that they are making an effort to conserve water or electricity. One hundred residents are randomly selected. What is the probability that the sample proportion making an effort to conserve water or electricity is greater than 79%? Interpret your result. Assume the sampling distribution of sample proportions is a normal distribution. The mean of the sample proportion is equal to the population proportion and the standard pq deviation is equal to The probability is (Round to four decimal places as needed.)

The scores of individual students on the American College Testing (ACT), a college readiness assessment, have a Normal distribution with a mean of 18.6 and a standard deviation of 6.0. At Northside High, 36 seniors take the test. Assume the scores at this school have the same distribution as national scores. What is the mean of the sampling distribution of the sample mean score for a random sample of 36 students? 0 1 0 6

Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u= girl(s). (Round to one decimal place as needed.) The standard deviation is o = e# girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x 0 1 2 3 4 5 6 7 8 átv P(x) 0.004 0.034 0.117 0.218 0.278 0.217 0.102 0.027 0.003 D - X NiZ Next

Which of the following would you expect not to have a normal distribution? The actual weight of rice in a bag labeled as a 20 pound bag Scores on the NY state English Regents test. The delay, measured in minutes, of flights from La Guardia airport. The weights of eighth grade children in NYC schools