A set of quiz scores is shown in the histogram below. The mean of the data set is 20.2, and the (population) standard deviation is 2.4. How many numbers in the data set are within 1 standard deviation of the mean?

A number greater than 2019 is the sum of at least ___ 2 digits number

Is 3 (x+1) - (1 + x and 2x + 3 equivalent?

In a class 27 of students, 6 have a cat and 18 have a dog. There are 2 students who have a cat and a dog. What is the probability that a student chosen randomly from the class has a cat and a dog?

Amhed pays $2.10 for 5 1/4 pounds of bananas. Janel pays $3.25 for 6 1/2 pounds of bananas. Which is the better buy? Explain why.

S/5+125=2225 What is s

Laura rents a movie for a flat fee of $2.00 plus an additional $0.50 for each night she keeps the movie. Choose the cost function that represents this scenario if x equals the number of nights Laura has the movie. a. c (x) = 2.00x + 0.50 b.

AB=4-5x BC=2x+25 find AC

If X and Y are random variables, the sum of all the conditional probabilities of X given a specific value of Y will always be: -0.0-1.0-the average of the possible values of X.-the average of the possible values of Y.

The price of a car has been reduced from $12,500 to $7,750. What is the percentage decrease of the price of the car?

F (*) = -4 (*+2) 2 + 10 in the form f (*) = ax2 + bx+c