10 !
amy and alex are making models for their science project. both the models are in the shape of a square pyramid. the length of the sides of the base for both the models is 8 inches. amy’s model is 5 inches tall and alex’s model is 3 inches tall. find the difference in volume of the two models. (justify)

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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).