point Four buses carrying 157 high school students arrive to Montreal. The buses carry, respectively, 33, 50, 25, and 49 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y:

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A:

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Q: 3. Below is a list of grades from a basic calculus Test for 25 students 32 34 35 37 43 45 47 47 48…

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Q: The class width is

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