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Author Question: The dean of the Business School at a small Florida college wishes to determine whether the ... (Read 71 times)

joe

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on: Feb 14, 2020
The dean of the Business School at a small Florida college wishes to determine whether the grade-point average (GPA) of a graduating student can be used to predict the graduate's starting salary. More specifically, the dean wants to know whether higher GPAs lead to higher starting salaries. Records for 23 of last year's Business School graduates are selected at random, and data on GPA (x) and starting salary (y, in $thousands) for each graduate were used to fit the model

E(y) = β0 + β1x.


The results of the simple linear regression are provided below.
= 4.25 + 2.75x,SSxy = 5.15, SSxx = 1.87
​SSyy = 15.17, SSE = 1.0075
Range of the x-values:2.23 - 3.85
Range of the y-values:9.3 - 15.6

Suppose a 95% prediction interval for y when x = 3.00 is (16, 21). Interpret the interval.
◦ We are 95% confident that the starting salary of a Business School graduate will increase between $16,000 and $21,000 for every 3-point increase in GPA.
◦ We are 95% confident that the mean starting salary of all Business School graduates with GPAs of 3.00 will fall between $16,000 and $21,000.
◦ We are 95% confident that the starting salary of a Business School graduate will fall between $16,000 and $21,000.
◦ We are 95% confident that the starting salary of a Business School graduate with a GPA of 3.00 will fall between $16,000 and $21,000.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by joe on Feb 14, 2020

al

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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joe

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Reply 2 on: Feb 14, 2020
Great answer, keep it coming :)

tkempin

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Reply 3 on: Yesterday
:D TYSM

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