The test scors of the nine students in mr's miller's history class are shown below 68,69,70,71,71,72,72,72,100. which of the follong statement is true about the test scores. A the median represents these test score because it is the vallue that occurs the most. B the mean represents these test scores because it is the middle value of these test scores. C the median misrepresents these test scores because ioo is an extreme value. D the mean misrepresents these test scores because IOO is an extreme value.

△def is similar to △stu. write a proportion that contains st and su.

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).

The life, in years, of a certain type of electrical switch has an exponential distribution with an average life b = 2. if 100 of these switches are installed in dif- ferent systems, what is the probability that at most 30 fail during the first year?