STAT 72 TEST 3
_
NAME:
Use at least 4 decimal places.
1) The slope (b1) represents?
(3 points)
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predicted value of Y when X = 0
_x_
the estimated average change in Y per unit change in X
_
the predicted value of Y
_
variation around the line of regressio
STAT 72 TEST 2
_
NAME:
Use at least 3 decimal places.
1) A 2 test for the difference in proportions is more appropriate than a Z test for the
difference in proportions if you have more than 2 populations? TRUE or FALSE.
points)
(3
2) Which of the followin
STAT 72 FINAL
_
NAME:
Use at least 3 decimal places.
1) The temperatures of 2 cities were studied. Following are the results. At the .05 level of
significance, is there evidence of a difference in the variability of the temperatures
between the 2 cities?
STAT 72 TEST 1
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NAME:
Use at least 3 decimal places.
1) If you analyze sample data from populations that are related, which test would be the
most appropriate? (2 points)
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Separate-Variance t test
_x_
Paired t test
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Pooled-Variance t test
2) When perfo