Company XYZ know that replacement times for the DVD players it produces are normally distributed with a mean of 8 years and a standard deviation of 1.8 years. Find the probability that a randomly selected DVD player will have a replacement time less than 2.2 years? P(X < 2.2 years)

I'm so close to finishing all these.

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

Every time you drive you will experience a combination of driving conditions and environments.