# A regression was run to determine if there is a relationship between hours of TVwatched per day (x) and number of situps a person can do (y)The results of the regression were:у-а+bxb-0.98a-20.878r2-0.678976r=-0.824Use this to predict the number of situps a person who watches 5.5 hours of TV cando.Round to one decimal place.

Question
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How do find the answer on paper and the TI84

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Step 1

Given data
y = a + bx
b = - 0.98
a = 20.878
r2 = 0.678976
r = -0.824
The least square regression equation is given by
y = a + bx
y = 20.878 + (-0.98) x
No of situps a person who watches 5.5 hours of tv is given by
putting x = 5.5 in least square regression equation
y = 20.878 + (-0.98) * 5.5
y = 15.488

Step 2

Using TI84

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