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Question: Use the program ADDGEN to generate 200 random addresses in Lockhart City and then the program SURVEY to obtain the responses of these houses. Estimate the following:
a The average price a household is willing to pay for cable TV
b The average number of TVs in a household in Lockhart City
c The proportion of houses willing to pay at least $10 for cable service. Be sure to give standard errors for all estimates. (Use the fpc, even though it may not be strictly necessary.) Make sure you save the sample you obtained for this exercise-you will use it again in the next chapter.
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
The article "Psychiatric and Alcoholic Admissions Do Not Occur Disproportionately Close to Patients' Birthdays" (Psychological Reports, 1992: 944-946) focuses on the existence of any relationship between the date of patient admission for treatment..
A data firm records a large amount of data. Historically, .9% of the pages of data recorded by the firm contain errors. If 200 pages of data are randomly.
After an unusually dry autumn, a radio announcer is heard to say, "Watch out! We'll pay for these sunny days later on this winter." Explain what he's trying to say, and comment on the validity of his reasoning.
Calculate the mean salary of the CFOs and base on measures of the center of the data; determine if the CFO salary data are skewed.
A brokerage firm deals in stocks and bonds. An analyst for the firm is interested in assessing the probability that a person who inquires about the firm.
Find the 99% confidence interval for the true mean chloride level of all healthy Alaskan residents.
several Measures of Central Tendency (averages). We usually use the mean. Where would we use other measures, such as the mode or the median?
identify the types of samples- systematic cluster convenience random stratified1. a sample was taken of every 49th
Given that he makes first, assume probability that he makes second is 0.60. Given that he misses first, assume probability that he makes second one is 0.40.
test the claim that the population of earthquakes has a mean magnitude greater than 1.00. use a 0.01 significance level
Is the number of games won by a major league baseball team in a season related to the team's batting average? The information in the table, extracted from Sports Illustrated and Sporting News, shows the number of games won and the batting aver..
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