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Three Statistics Questions: Radio Station, Mean Annual Temperature, and Seventh Grade Homeroom

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June 18th, 2023

See attached file for full problem description.

Problem 1

You own a radio station and you have three salespeople. Below is a listing of their sales for the last eight weeks. Please use α .05 to decide if there is a difference in the means.

Problem 2

Research the area where you live, or any other city you like. Find out the mean annual temperature, and do a linear regression for the years of 1900- 2000, and also for the years of 1945 to 1970. Do these equations show the same trend? Please display your data in a graph, excel has an excellent chart wizard.

Problem 3

During Ms. Johnson’s seventh grade homeroom several students miss on a given day. Use a χ2 to perform a goodness of fit analysis.

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