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
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
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
Review Materials for Math Competitions
Mathematics Competitions are tough! To help you find a site for your reviews, here are some of the links:
Enjoy and good luck with competition!
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