Math Review Questions

PSQ Reviewer

1. Another name for the residual term in a regression equation is

A. residual analysis.
B. random error.
C. homoscedasticity.
D. pooled variances.

2. A chi-square test for independence with 8 degrees of freedom results in a test statistic of 18.21. Using
the chi-square table, the most accurate statement that can be made about the p-value for this test is that
A. p-value < 0.01.
B. 0.10 > p-value > 0.05.
C. 0.025 > p-value > 0.01.
D. 0.05 > p-value > 0.025.

British Columbia College

Junior High School Mathematics Contest

Part B Final

April 30, 1999

JHS Math Contest Part A Final BCC

British Columbia College

Junior High School Mathematics Contest

Part A Final

April 30, 1999

British Columbia Colleges

Junior High School Mathematics Contest

Preliminary Round

March 10, 1999

Statistics Exam 1

Question 1 of 20 5.0 Points
A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?
A. 19.46%
B. 12.85%
C. 2.87%
D. 13.46%

Question 2 of 20 5.0 Points
A bank’s loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 225 and 275.
A. 0.2416
B. 0.2418
C. 0.2417
D. 0.2420