In: Statistics and Probability
The College Board reported the following mean scores for the
three parts of the SAT (The...
The College Board reported the following mean scores for the
three parts of the SAT (The World Almanac, 2009):
Critical
reading
502
Mathematics
515
Writing
494
Assume that the population standard deviation on each part of
the test is 100.
- What is the probability that a random sample of 90 test takers
will provide a sample mean test score within 10 points of the
population mean of 502 on the Critical reading part of the
test?
- What is the probability that a random sample of 90 test takers
will provide a sample mean test score within 10 points of the
population mean of 515 on the Mathematics part of the test? Compare
this probability to the value computed in part (a).