1- Vision Correction About 75% of the US population uses some type of vision correction (such as glasses or contact lenses)

A-If someone is randomly selected,what is the probability that he or she does not use vision correction?

B- If four different people are randomly selected, what is the probability that they all use vision correction?

2- Pennsylvania Cash 5 In the Pennsylvania cash 5 lotteries, winning the top prize requires that you select the correct five different numbers between 1 and 43 (in any order)/. what is the probability of winning the top prize? Express the answers as a fraction.

3- Is a probability distribution defined if the only possible values of a random variable are 0,1.2,3 and P(0)= P(2) P=(3) = 1/3?

4- Does the table describe a probability distribution?

5-Based on the table, the standard deviation is 0.9 flight.What is the variance? Include appropriate units.