Let X1, X2, X3 be mutually independent random variables with Poisson distributions having means 2, 1, and 4, respectively. (a) Find the mgf of the sum Y = X1 + X2 + X3.
(b) How is Y distributed?
(c) Compute P(3 ≤ Y ≤ 9).

Draw a scaled copy of the circle using a scale factor of 2

The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.