Given that x is a normal variable, which of the following statements is true?

a. the variable 5x is also normally distributed

b. the variable x+5 is also normally distributed

c. the variable x−5 is also normally distributed

d. all of the above statements is true

like the normal distribution, the exponential density function f(x)

a. approaches zero as x approaches infinity

b. is symmetrical

c. approaches infinity as x approaches zero

d. is bell-shaped

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.