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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?
Calculate the variance-covariance matrix of the OLS estimator of β1.β2 and β3 and verify that:
1. ifnbspphi-z0 nbspalpha2 z0 ? assume alpha lt0.1.2. a company produces cooling tubes. the pressure of the tube is an
the pdf for 3 parameter frechet distribution is ltbrgtfxa?a x-?-a-1 exp-x-?-a ltbrgtthen how we can prove the cdf for
Your write-up of this experiment should include your work to determine the n, your methodology, your record of the experiment, your confidence interval, your interpretation of the confidence interval, your formal hypothesis test and your comments ..
Each of the following proportions is based on survey responses. For each proportion, use the ±2 rule of thumb to determine the 95 percent confidence interval. When asked if they are satisfied with their financial situation, .29 said "very satisfied" ..
thompson photo works purchased several new highly sophisticated processing machines. the production department needed
It is known that 35% of the members of a certain population suffer from one or more chronic diseases. What is the probability that in a sample of 200 subjects drawn at random from this population 80 or more will have at least one chronic disea..
What is the standard error of his prediction?
Your firm has 3 different lines that each produce the same type of widget
A quality control analyst measures the number of hours a patient in a low-risk condition waits for care at the emergency room of a small hospital. The following data are obtained for 20 patients.
The vast majority of the world uses
Calculate the standard deviation for the sample mean
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