business statistics
UCLA College of Business obtained the following results from two independent random samples on the salaries of a recent graduating class:
Sample Economics (1) Majors
Sample Marketing (2) Majors
Sample Size Economics Majors =36
Sample Size Marketing Majors =54
Mean Sample Economics = $51,230 Mean Sample Marketing =$49,300
Standard Deviation Sample Economics =$1,035
Standard Deviation Sample Marketing =$1,450
Managerial Report
Please addresses the following issues:
1) What is the degrees of freedom for the t distribution (round the answer to the previous whole number)? Why is the t distribution appropriate in this situation? Show steps
2 ) What is the 95% confidence interval for the difference between the two population means (to 1 decimal and enter any negative values as a negative number)? Show steps
3) At 95% does there appear to be any difference in the mean job offer for these two groups? Ho:u1-u2= 0 Which method are you using (Show Steps)? Please explain in detail. Ha:u1-u2 ≠ 0
Problem # 2
Cheap airline and Discount airline fly around the U.S. from their Hub in Sanford Florida. The following data are from matched samples of two-way ticket price of 10 cities where these two companies fly.
City Cheap Airline Discount Airline
Panama city, FL $380 $420
Reno, Nevada $400 $430
Los Angeles, CA $350 $340
Syracuse, New York $240 $230
Seattle, Washington $230 $330
Miami, Florida $270 $280
San Antonio, Texas $230 $240
Chicago, Illinois $210 $220
Atlanta, Georgia $100 $130
Minneapolis, Minnesota $130 $140
Consider the following hypothesis test Ho:ud=0
Conduct a hypothesis test using alpha = 0.01. What is your conclusion? Which method are you using (Show Steps)? Please explain in detail.
-Thank you
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The Striving for Perfection Urgent Care Center feels
that its patients wait time is too long.
The staff has noticed that increasing numbers of people are waiting
longer in the waiting room.
The national benchmark performance is 90 minutes or less from the
time the customer arrives
to the time the customer is treated and discharged.
Part I
The staff decides to examine the time it takes for all patients to
move through their service process
on two successive days...
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