The following is a list of 4 measurements. 20, 16, 5, 18
Suppose that these 4 measurements are respectively labeled X1, X2, ..., X4
4
E (xi)2
I=1

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

If 25% of y is 30, what is 60% of y?