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3 years ago

HELP I WILL MARK YOU AS A BRAINLIEST I KNOW IM SO DUMB!!

Mathematics

2 answers:

lapo4ka [179]3 years ago

8 0

Answer: The answer would be 6.15.

-Convert 2 2/5 into a decimal: 2.40.

-Add 3.75 + 2.40.

-Your sum should be 6.15

monitta3 years ago

4 0

Answer:

6.15.

Step-by-step explanation:

3.75 + 2 2/5

= 3.75 + 2.40

= 6.15.

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Simplify the Expression:

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Your answer is C, not B.

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3 years ago

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Answer:

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3 years ago

Question 6 of 10

Veseljchak [2.6K]

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Explanation:

y = [x] - 2

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3 years ago

A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 scor

Katena32 [7]

Answer:

Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.

Step-by-step explanation:

We are given the following in the equation:

A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 score.

Thus, Exam 3 score becomes the dependent variable and exam 1 score is the independent variable.

The regression equation is given by:

$\hat{y} = 50.57+0.4845x$

Comparing the equation to a linear equation:

$y = mx + c$

m = 0.4845

c = 50.57

Where m is the slope and tells the rate of change and c is the y intercept that is the value of y when x is 0.

When, there is a increase in x, we can write:

$\hat{y}(x) = 50.57+0.4845x\\\hat{y}(x+1) = 50.57+0.4845(x+1)\\\hat{y}(x+1) - \hat{y}(x) = 50.57+0.4845(x+1)-(50.57+0.4845x)\\\hat{y}(x+1) - \hat{y}(x) = 0.4845$

Thus, the slope of equation can be interpreted as:

Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.

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4 years ago