A population of size 1,000 has a proportion of 0.5 . Therefore, the proportion and the standard deviation of the sample proportion for samples of size 100 are
a. 500 and 0.047
b. 500 and 0.050
c. 0.5 and 0.047
d. 0.5 and 0.050
Question 2
A regression model between sales (y in 1000), unit price (x1 in dollars), and television advertisement (x2 in dollars) resulted in the following function: y = 7 - 3x1 + 5x2 For this model, SSR = 3500, SSE = 1500, and the sample size is 18 . To test for the significance of the model, the p-value is
a. less than .01.
b. between .01 and .025.
c. between .025 and .05.
d. greater than .10.
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