HELP ME Twelve out of the first 100 people who entered the mall were wearing glasses. If this sample is representative of 550 people who entered the mall, about how many of them will probably be wearing glasses?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

Predict which statements are true about the intervals of the continuous function. check all that apply