Margaret's Sock Emporium sells hand-knit wool socks. Margaret claims the mean amount of wool per pair is 2 oz, with a standard deviation of 2 oz. You
take a random sample of 40 socks and find that the mean weight is 1.9 oz.
What's the P-value for getting a sample mean of 1.9 oz or less?
A. .0008
B. .05
C. .032
D. .01
E. -3.16

Reflect the point (7,0) across the y-axis

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.