Characteristics of antiwar demonstrators. Refer to the American Journal of Sociology (Jan. 2014) study of the characteristics
Question:
Characteristics of antiwar demonstrators. Refer to the American Journal of Sociology (Jan. 2014) study of the characteristics of antiwar demonstrators in the United States, Exercise 2.106
(p. 105). The researchers found that the mean number of protest organizations joined by antiwar demonstrators over a recent 3-year period was .90 with a standard deviation of 1.10. Assume that these values represent the true mean m and true standard deviation s of the population of all antiwar demonstrators over the 3 years.
a. In a sample of 50 antiwar demonstrators selected from the population, what is the expected value of x, the sample mean number of protest organizations joined by the demonstrators?
b. Find values of the sample mean, L and U, such that P1L 6 x 6 U2 = .95.
Step by Step Answer:
Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package
ISBN: 978-0134090436
13th Edition
Authors: James Mcclave ,Terry Sincich