StatHQuiz7F10

StatHQuiz7F10 - You may write on sentence completely and...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Statistics Quiz 7 It is due at the beginning of the period on Thurs. Nov 11. Annual surveys are conducted on college grads to determine the starting salary. In a Fall 2007 report the mean starting salary for accounting majors was $47,000 with a standard deviation of $2500 and the mean starting salary for Liberal Arts major was 33,000 with a standard of 3500. Assume that these statistics were based on a random sample of 100 grads from each major. With sample sizes this large you may use t* = 2. A) Write a sentence telling what μ 1 and μ 2 represents in the context of this problem.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: You may write on sentence completely and ditto the other. B) Construct a 95% confidence interval for the difference between average starting salaries for accounting majors and liberal arts majors. C) Interpret the interval in part B by writing a sentence that describes which major has a higher starting salary and how much higher it is. D) Based on the interval in part B what would you decide about the null hypothesis that there is no difference in the average starting salaries for the two majors? Explain how you decide....
View Full Document

This note was uploaded on 10/18/2011 for the course STA 2023 taught by Professor Shaw during the Fall '11 term at Valencia.

Ask a homework question - tutors are online