elliebomb13

08.02.2022 • 

Mathematics

3. The following table shows the test scores and sleep averages of several students. Hours of sleep (x) 7 7 7 6 8 8 9 5 6 7 7 9 8 8
Test score (y) 90 75 70 7085 95 90 6065 80 70 85 85 100
10
8
95 90
(a) Use graphing technology (Tl calculator or Desmos) to find the linear regression equation that models
the data. Let x equal the hours of sleep and y equal test score. Explain the steps you use.
(b) Use the equation to determine the approximate test score of a student who sleeps an average of 7.5
hours a night. Show your work.

Ответ:

cathydaves

02.01.2021

Mathematics

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You can use the symbol over 13 or you can write it like

10 square root (13)

The answer to that is 36.0555127546

Hope this helps!

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