26. If we accept H0, we expose ourselves to making A. A Type I error B. A Type I
ID: 2955415 • Letter: 2
Question
26. If we accept H0, we expose ourselves to making
A. A Type I error
B. A Type II error
C. A correct decision when H0 is true.
27. If the level of significance is .05, then the probability ofmaking a Type I error is:
A. 0 B. 1/20
C. 19/20 D. 20/20
28. If the alternative hypothesis states that ? < 6,700, therejection region for the hypothesis test is in:
A. Both tails B. Lower tail
C. Upper tail D. Center
E. None of the above
29. If an estimated regression coefficient has a two-tailp-value of .03 and you want to test H0: b = 0 at the .05 level,what is the decision.
A. Accepted the null, because .09 > .05
B. Reject the null, because .03 < .05
C. Reject the null, because .06 > .05
D. Need more information before a decision can be made
30. For the regression equation Y’ = a + bX, a is
A. the point at which the line crosses the X-axis.
B. the slope of the regression line.
C. the point at which the line crosses the Y-axis.
31. The Chi-square distribution is
A. symmetric.
B. positively skewed.
C. negatively skewed.
32. A two-way classification of the data is called a
A. normal distribution.
B. contingency table.
C. chi-square distribution.
33. The method used to arrive at the "best-fitting" straightline in regression analysis is referred to as the:
A. Freehand method. B. Nondetermination method.
C. Least squares method. D. Correlation method.
34. The variable used to predict another variable is calledthe:
A. Dependent variable. B. Independent variable.
C. Correlation variable. D. Student's t variable.
35. A random sample of 16 statistics examinations was taken. Theaverage score, in the sample, was 76.2 with a variance of 144. The99% confidence interval for the true average examination scoreis
a.
49.677 to 102.723
b.
73.99 to 78.41
c.
67.359 to 85.041
d.
67.437 to 84.963
35. A random sample of 16 statistics examinations was taken. Theaverage score, in the sample, was 76.2 with a variance of 144. The99% confidence interval for the true average examination scoreis
a.
49.677 to 102.723
b.
73.99 to 78.41
c.
67.359 to 85.041
d.
67.437 to 84.963
Explanation / Answer
According to my knowledge.... 26. (B) 27. (A) 28. (C) 29. (D) 30. (D) 31. (B) 32. (B) Sorry No Idea About Last Two Questions.
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