Mathematics, 15.10.2019 19:20 nengliangli523
Suppose that a school has 20 classes: 16 with 25 students in each, three with 100 students in each, and one with 300 students, for a total of 1000 students. (a) what is the average class size? (b) select a student randomly out of the 1000 students. let the random variable x equal the size of the class to which this student belongs, and define the pmf of x. (c) find e(x), the expected value of x. does this answer surprise you?
Answers: 1
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Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.
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Suppose that a school has 20 classes: 16 with 25 students in each, three with 100 students in each,...
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