A quiz consists of 10 true or false questions. To pass the quiz a student must answer at least eight questions correctly. If the student guesses on each question, what is the probability that the student will pass the quiz?
A) 0.055 B) 0.8 C) 0.20 D) 0.08
Q. 2A history instructor has given the same pretest and the same final examination each semester. He is interested in determining if there is a relationship between the scores of the two tests.
He computes the linear correlation coefficient and notes that it is 1.15. What does this correlation coefficient value tell the instructor? A) The history instructor has made a computational error.
B) There is a strong positive correlation between the tests.
C) There is a strong negative correlation between the tests.
D) The correlation is something other than linear.
Q. 3Suppose you want to test the claim that = 3.5. Given a sample size of n = 48 and a level of significance of = 0.01, when should you reject H0 ?
A) Reject H0 if the standardized test statistic is greater than 2.575 or less than -2.575.
B) Reject H0 if the standardized test statistic is greater than 2.33 or less than -2.33.
C) Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96
D) Reject H0 if the standardized test statistic is greater than 1.645 or less than -1.645
Q. 4an evaluation received by a physics student (excellent, good, satisfactory, or poor).
A) ordinal B) ratio C) nominal D) interval
Q. 5John has six bills of paper money in the following denominations: 1, 5, 10, 20, 50, and 100 If he selects 3 bills at a time what is the probability of selecting a group that has an average value of at least 26?
A) 0.55 B) 0.50 C) 0.60 D) 0.45
Q. 6A scatter diagram locates a point in a two dimensional plane. The diagram locates the variable on the horizontal axis and the variable on the vertical axis.
A) predictor; response B) response; predictor
C) response; study D) study; predictor
Q. 7capacity of a backpack
A) ratio B) interval C) nominal D) ordinal
Q. 8Find the critical value for a two-tailed test with = 0.08.
A) 1.75 B) 1.405 C) 2.65 D) 1.96
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