Question
a bag has 5 blue marbles, 4 red marbles, and 3 green marbles. a student randomly picks a marble from the bag and then rolls a number cube with sides labeled 1 through 6.

what is the probability that the student picks a blue marble from the bag, and then rolls a 4?

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.

What is the sum of the measures of the interior angles of an octagon

The height of a certain banner is equal to one third of its length. if the banner is 5 feet tall, write an equation that can be used to find the banner's length,l, in feet