He graph f(x)=x2 was transformed to create the graph g(x)=−15x2. Which statement describes this transformation?

a reflection over the x-axis and a vertical compression

a reflection over the y-axis and a vertical compression

a reflection over the y-axis and a horizontal compression

a reflection over the x-axis and a horizontal compression

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).