Suppose that 100 items are drawn from a population of manufactured products and the weight, X, of each item is recorded. Prior experience has shown that the weight has a non-normal probability distribution with = 8 ounces and = 3 ounces. Which of the following is true about the sampling of ?
a. Its mean is 8 ounces. c. Its shape is approximately normal.
b. Its standard error is 0.3 ounces. d. All of these choices are true.
Question 2
A regression line using 25 observations produced SSR = 118.68 and SSE = 56.32 . The standard error of estimate was:
a. 2.11
b. 1.56
c. 2.44
d. None of these choices.
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