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MaRussiya [10]
3 years ago
6

The regression equation below relates the scores students in an advanced statistics course received for homework completed and f

or the subsequent midterm exam. Homework scores are based on assignments that preceded the exam. The maximum homework score a student could obtain was 500 and the maximum midterm score was 350. The regression line that was obtained is given by y=−84.4+0.91x . If a student had a homework score of 420 , the midterm score would be predicted to be (rounded to an integer ):a. 298b. 378c. 336d. None of the answer choices is correct
Mathematics
1 answer:
serg [7]3 years ago
7 0

Answer: d.) None of the answer choices is correct

Step-by-step explanation:

The homework score is an independent variable (known) and on the x-axis, while the midterm exam is the dependent variable, so it's on the y-axis

y = 0.91x - 94.4; and x=420

Substitute x as 420 into the equation.

y = 382.2 - 94.4 = 287.8, or approximately 288.

And this value isn't in the options above.

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a rectangular parking lot has an area of 7/10 square kilometer the width is 1/3 kilometer what is the length of the parking lot
Virty [35]

Answer:

2\frac{1}{10} km

Step-by-step explanation:

We are given;

  • The are of a rectangle as 7/10 km²
  • Width of the rectangle is 1/3 km

We are required to find the length of the rectangle;

We need to know how to find the area of a rectangle first;

Area of rectangle = Length × Width

Rearranging the formula;

Length = Area of rectangle ÷ Width

            = 7/10 km² ÷ 1/3 km

   We get;

           =\frac{7}{10} *\frac{3}{1}

           =\frac{21}{10}

           =2\frac{1}{10} km (improper fraction)

Thus, the length of the rectangular park is 2\frac{1}{10} km

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3 years ago
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Sever21 [200]
<span>choice B 
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3 years ago
Dan earns £8.30 per hour how much will he earn for 9 hours work
Nana76 [90]

Hey there!

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Oduvanchick [21]

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1 year ago
In what line do planes A and QRV intersect?
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In this question, we have to fin the line of intersection of the planes A and QRV.

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The only line which passes through both planes is  QR.

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