Rachel wants to make more of the pink paint that matches the color she made before. She starts with 10 gallons of white paint. How many cups of red paint should Rachel add so that the pink color matches?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old