1. It has been determined that there is a strong linear relationship between the
ID: 3227394 • Letter: 1
Question
1. It has been determined that there is a strong linear relationship between the weight of a certain breed of monkey and its height. From a random sample of monkeys, a least squares regression line was computed, relating the monkey's weight, y, in pounds, with its height, x, in inches. The regression line was:
Weight = -16.88 + 2.13 Height
20 < Height < 45
What would be the height of a monkey whose weight was predicted to be 70 pounds?
options:
24.9 inches
32.9 inches
40.8 inches
53.1 inches
132.2 inches
2. Which of the following statements is INCORRECT about the sampling distribution of the sample mean:
options:
The standard error of the sample mean will decrease as the sample size increases.
The standard error of the sample mean is a measure of the variability of the sample mean among repeated samples.
The sample mean is unbiased for the true (unknown) population mean.
The sampling distribution shows how the sample mean will vary among repeated samples.
The sampling distribution shows how the sample was distributed around the sample mean.
24.9 inches
32.9 inches
40.8 inches
53.1 inches
132.2 inches
Explanation / Answer
1. Substitution of weight in the equation yields the height as answer. Therefore 70+16.88=2.13*height
Also 86.88/2.13=40.8 answer C
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