You randomly grab a card from a 52 card deck. what is the chance of picking an ace or a 6?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Indicate the formula for the following conditions: p^c(n,r)=