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a. Graph the histogram associated with the data given in Exercise 12, page 523.
b. Find the mean and the standard deviation for these data.
Exercise 12:
DRIVING AGE REQUIREMENTS The minimum age requirement for a regular driver's license differs from state to state. The frequency distribution for this age requirement in the 50 states is given in the following table:
a. Describe a random variable X that is associated with these data.
b. Find the probability distribution for the random variable X.
c. Compute the mean, variance, and standard deviation of X.
What is the mean of the sampling distribution of p ˆ, the proportion of adults in samples of 500 who favor giving parents of school-age children these vouchers?
A family is canoeing downstream (with current). Their speed relative to the banks of the river averages 2.75 mi/h. During the return trip, they paddle upstream (against the current), averaging 1.5 mi/h relative to the riverbank.
What is the compound interest earned?
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As part of his retirement planning, Mr. Martin purchases an annuity that pays 8.5% compounded semiannually. If the semiannual payment is $9,500, how much will Mr. Martin have saved in 4 years?
A rational number r = p/q, where p, q are in Z, is said to be properly reduced if p and q (q > 0) have no common integral factor other than +1 or -1. Define the function f as follows;
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