A sample of 25 seniors from a large urban school district has a mean Verbal SAT score
Fantastic news! We've Found the answer you've been seeking!
Question:
A sample of 25 seniors from a large urban school district has a mean Verbal SAT score of 450. Assume we know that the standard deviation of the population of verbal SAT scores for seniors in the district is S=100. A 90% confidence interval for the mean score u for the population of seniors is used. Which of the following will produce a confidence interval with a smaller margin of error?
A. Using a confidence interval of 95%.
B. Using a sample of 100.
C. Using an upper critical value of 99%.
D. Using a sample of 15 seniors.
E. Using any sample size smaller than 25.
Related Book For
Elementary Statistics Picturing the World
ISBN: 978-0321911216
6th edition
Authors: Ron Larson, Betsy Farber
Posted Date: