Yvonne put $4,000 in a savings account. at the end of 3 years, the account had earned $960 in simple interest. a. how much does she have in her account at the end of the three years? b. at what anual simple interest rate did the account grow? show your work.
c. how many more dollars would she have in her account if the interest rate were 1% greater?

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).