Answer:
Step-by-step explanation:
1 . that’s it. That’s the simplest form I’m guessing.
Answer: 3.13; The regression line underpredicts the student's math test score.
Step-by-step explanation:
Given the equation of a regression model:
ŷ = −23.5 + 0.8534s,
where ŷ = predicted math score
s = IQ score
An actual math test score for a student is 73.5 with an IQ of 110.
Using the model to predict the score is f the student above ;
ŷ = −23.5 + 0.8534(110)
ŷ = −23.5 + 93.874
y = 70.374
Actual score = 73.5
Hence, since the actual score is greater Than the predicted score, then the model underpredicted the score by
Residual = actual - predicted = (73.5 - 70.374) = 3.126 = 3.13
Both the side are 21 units.
⇒ It is an isosceles triangle.
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Property of the angles in a triangle:
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Sum of all angles in a triangle = 180°
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Find x:
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x + x + 38 = 180
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Combine like terms:
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2x + 38 = 180
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Take away 38 from both sides:
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2x = 142
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Divide by 2 on both sides:
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x = 71
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Answer: x = 71°
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