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For its "music 360 "survey, nielsen co asked teenagers and adults how each group has listened to music in the past 12 months. Nearly two thirds of U.s teenagers under the age of 18 say they use google inc's video sharing site to listen to music and 35% of the teenagers said they use pandora media Inc's custom online radio service( the wall street journal, august 14, 2012). Suppose 10 teenagers are selected randomly to be interviewed about how they listen to music. a. is randomly selecting 10 teenagers and asking whether or not they use pandora media inc's online service a binomial experiment? b. what is the probability that none of the 10 teenagers use pandora media inc, online radio service? c. what is the proabbility that 4 out of the 10 teenagers use pandora media inc online radio service? d. what is the probability that at least 2 of the 10 use pandora media online radio service?
Determine the significance of the difference between the groups and determine whether building systems helped reduce new cases of malaria.
What are some of the main uses of a regression analysis
Perform a hypothesis test of H0
What percentage of the area of the standard normal distribution is between z = -2.00 and z = +2.00? How do you know this?
1. listed below are the numbers of people executed in the united states from 1976 nbsp to 1994. in 1976 the u.s.
Why is normality required for standard deviation applicability?
Calculate the correlation between pretest and posttest scores separately for each gruop and determine sperately for each group whether performance improved from pretest to posttest
Analyze whether gender differences exist in the size of pay-raise and whether or not these differences are attributable to the size of the university.
A randomized, controlled experiment investigated
What is the probability in the sample?
What is the correlation coefficient and do the data provide sufficient evidence to conclude that the number of years of study and test score are linearly positively correlated? Use α = 0.01
Describe a circumstance when the mean is a very useful measure and a circumstance when it is misleading
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