The number of DVDs sold at Bob's store can be modeled by
the function N (t) = 4t + 3 and the price per DVD can be
modeled by the function P(t) = =12 – 2t + 7.2, where t is
the number of years since 2002.
According to this model, what is the total amount of revenue
generated by Bob's DVD sales in the year 2010?
$
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Astudy found that the variance in the number of vehicles owned or leased by subscribers to a magazine is .094. assume a sample of 12 subscribers to another magazine provided the following data on the number of vehicles owned or leased: 1,1,1,0,3,2,1,1,2,1,0, and 1 a) compute the sample variance in the number of vehicles owned or leased by the subscribers (to 4 decimals). b)test the hypothesis to determine whether the variance in the number of vehicles owned or leased by subscribers of the other magazine differs from .calculate the value of the test statistic (to 3 decimals).