Question
The variance of the MCAT scores of students at USC Medical School was 50. Recently, a sample of 30 students had a variance of 45.
The variance of the MCAT scores of students at USC Medical School was 50. Recently, a sample of 30 students had a variance of 45. We are interested in testing to see if there has been a significant change in the variance of SAT scores at USC.
a) Formulate the hypotheses
b) Calculate the test statistics (chi-square value) and test the hypotheses.
c) What are critical values?
d) What is the conclusion
1-a) A 95% confidence, what is the interval estimate of the variance for the population? Please round to the second decimal place.
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An Introduction to the Mathematics of Financial Derivatives
Authors: Ali Hirsa, Salih N. Neftci
3rd edition
012384682X, 978-0123846822
