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1.Hundreds of thousands of drivers dropped their automobile insurance in 2008 as the unemployment rate rose (Wall Street Journal, December 17, 2008). Sample data representative of the national automobile insurance coverage for individuals 18 years of age and older are shown here.
a. Develop a joint probability table for these data and use the table to answer the remaining questions.b. What do the marginal probabilities tell you about the age of the U.S. population?c. What is the probability that a randomly selected individual does not have automobile insurance coverage?d. If the individual is between the ages of 18 and 34, what is the probability that the individual does not have automobile insurance coverage?e. If the individual is age 35 or over, what is the probability that the individual does not have automobile insurance coverage?f. If the individual does not have automobile insurance, what is the probability that the individual is in the 18-34 age group?g. What does the probability information tell you about automobile insurance coverage in the UnitedStates?
He also knows that the number has 7 digits and the last digit is not a zero. if jay were to dial all of the possible numbers and it takes him 21 seconds to try each one, how long will it take him to try each possibility?
Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the leas..
To explain this, be sure to explain whether the null hypothesis should be rejected, the likelihood of that decision being an error, and why it might have been an error.
Outline the difference between the t test for independent groups and the t test for matched groups. A researcher computed the F ratio for a four-group experiment.The computed F is 4.86. The degrees of freedom are 3 for the numerator and 16 for the ..
If a group of 400 school children are selected at random, what is the probability that at most 70 children will miss school because of asthma?
the data in the excel spreadsheet linked below indicate the selling prices of houses located on corner lots corner-lot
What is the probability that the student is married, given the student was female? Your answer should be a decimal fraction accurate to 3 decimal places.
Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.
a recent study focused on the number of times men and women send a twitter message in a day. the information is
If the company's report is correct, what is the probability that the average balance of an account in the sample is $383 or less?
Particular brand that they buy. A retailer has ordered a consignment of 5000 such lamps for its chain store nationwide. What is the probability that, the number of defective lamps will be 500 or less?
a survey of magazine subscribers showed that 40.8 rented a car during the past 12 months for business reasons 20.2
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