Show thát E(X) = np when X is a binomial random variable. [Hint: First'express E(X) as a sum with lower limit x = Then factor out np, let y = x - 1 so that the sum is from y = 0 to y = n – 1, and show that the sum equals 1.] 1. -

Q: Use the sum-to-product identity to find an expression that is equivelentto cust 15)- cos(5ØL Frovide…

A: Use sum product identity to find the expression.

Q: 2x be17eX +l2=O

A:

Q: Help with #2 pls

A:

Q: Find A. -1 1 (4A)-1 = -4 2 A =

A: Solve the following

Q: Multiply. (ex − e−x)2

A: Here we multiply this:

Q: Simplify. - 1 (3a "") (За За

A:

Q: D P•

A: CT2=CA*CB

Q: A О в C

A: Given: To Find: To find the slope of the following line segments:

Q: Simultaneous 23 gy-1 +2

A:

Q: f 3 +4 F 27/-1)dt +

A: