A jar contains 10 red, 20 blue and 15 green marbles. What is the probability of selecting a blue marble? Answer in decimal form with 3 decimal places

A jar contains 10 red, 20 blue and 15 green marbles. A random sample of n = 3 marbles is selected. If the first one is blue and the second one is red, what is the probability the third one will be green? Answer in decimal form with 3 decimal places

Using the frequency distribution below determine the probability that a speeding ticket selected at random was given to a driver driving a black car.

Colors_______Frequency

Blue____________2

Red____________13

Black___________4

Silver___________8

White__________1

Gold___________4

Answer in decimal form with 3 decimal places.

In a normal distribution, what z-score separates the lowest 25%. Answer with only the z-score value and include the negative sign if required. z = _________

The population of drivers in New York State have an average age of 46.5 with a standard deviation of 8.5 years. What is the probability that a driver selected at random is older than 55? Answer with the exact probability value

The population of drivers in New York State have an average age of 46.5 with a standard deviation of 8.5 years. What is the probability that a driver selected at random is older than 25? Answer with the exact probability value

The population of drivers in New York State have an average age of 46.5 with a standard deviation of 8.5 years. What is the probability that a driver selected at random is between 46.5 and 75 years old? Answer with the exact probability value.

The population of drivers in New York State have an average age of 46.5 with a standard deviation of 8.5 years. What is the probability that a driver selected at random is 30 and 60 years old? Answer with the exact probability value.