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Looked in the textbook and having a hard time understanding how to correctly apply the formulas to this type of question. Textbook examples reads as the following.
Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household.
a. What is the probability that a household views television between 6 and 10 hours a day (to 4 decimals)?
b. How many hours of television viewing must a household have in order to be in the top 8% of all television viewing households (to 2 decimals)? hours
c. What is the probability that a household views television more than 4 hours a day (to 4 decimals)?
DRP test scores There are many ways to measure the reading ability of children. One frequently used test is the Degree of Reading Power (DRP).
Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
scores on the critical reading part of the sat exam in a recent year were roughly normal with mean 501 and standard
there are a lot of symbols so i am sorry if this is hard to read.qtheta hat qthetasuppose eq1eq2q. vq1sigma12
A company wanted to know if a special gas additive truly (and significantly) affected the gas mileage in their company vehicles. Use the data below to determine whether or not the additive significantly affected gas mileage.
What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? What is the probability that a randomly chosen stock investor also invests in fixed income instruments?
Determine the coefficient of determination. Assuming a direct relationship between the variables, what is the coefficient of correlation?
For University A, what are the mean and standard deviation of the sample mean?
If one ball is drawn from the bag in Problem, what is the probability that the ball is white, given that the ball is odd-numbered?
Find an example or exercise in an introductory statistics textbook that performs a chi-square test on data from a survey.
Death penalty, again. In the survey on the death penalty you read about in the chapter, the Gallup Poll actually split the sample at random.
What is the test value? find the critical value. state what the alternative hypothesis would be H1: customer shows no preference for a specific dessert.
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