A set of quiz scores is shown in the histogram below. The mean of the data set is 6.625, and the (population) standard deviation is 1.9. How many numbers in the data set are within 1 standard deviation of the mean?

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

What is a rational number between 9.5 and 9.7

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.