Stan is making a trail mix that has a combination of peanuts and raisins. the mix is 3 parts peanuts and 1 part raisins. how many cups of raisins does he need to use for a 16-cup recipe?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean