Which equation demonstrates the distributive property? a) 15 + 40 = 55 b) 15 x 40 = 40 x 15 c) (3 + 8)5 = 5(3 + 8) d) 15 + 40 = 5(3 + 8)

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Which of the following is an example of conditional probability

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.