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vaieri [72.5K]
3 years ago
14

) After the first exam in a large course, the professor surveyed 14 randomly selected students to determine the relation between

the amount of time they spent studying for the exam and exam score.  She found that a linear relation exists between the two variables.  The least-squares regression line that describes this relation is .
          (a) Predict the exam score of a student who studied 2 hours.

          (b) Write an interpretation for the slope. (Refer to Lesson 12.2 for this.)

          (c) Write an interpretation for the y-intercept, if appropriate. If not appropriate, explain why not. (Again, refer to Lesson 12.2 for this.)

 

2) In what scenarios would it not make sense to interpret the y-intercept?
Mathematics
1 answer:
olga_2 [115]3 years ago
3 0

C would be your answer, hope this helps!!

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7/19 en numero decimal​
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Which is more 2/3 or 2/4
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Eight friends started a business. They will wear either a baseball cap or a shirt imprinted with their logo while working. They
posledela

Answer:The system of equations to describe the situation are

c + y = 8

6c + 3y = 36

Step-by-step explanation:

Let c represent the number of shirts.

Let y represent the number of caps.

Eight friends started a business. They will wear either a baseball cap or a shirt imprinted with their logo while working. This means that

c + y = 8 - - - - - - - - - - -1

They want to spend exactly $36 on the shirts and caps. Shirts cost $6 each and caps cost $3 each. This means that

6c + 3y = 36 - - - - - - - - - - 2

4 0
3 years ago
Algebra 1B:<br>x/13 + 29 = -36​
d1i1m1o1n [39]

Answer:

Solve for x by simplifying both sides of the equation, then isolating the variable.

x=−845

Step-by-step explanation:

3 0
3 years ago
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Assume Charles charges $7*3=$21 if he babysits for 2,5 hours (that is 2 and a half hours).

That is we are not considering Charles babysitting exactly 1, 2, 3 or 4 hours, but also in between times.


then we can write the following piecewise function to describe the situation:


f is a function from (0, 4] to {$7, $14, $21, $28}

f(x)=\begin{cases} &#10;      \$7 & if \enspace \enspace x\leq 1 \\&#10;      \$14 & if \enspace \enspace 1\ \textless \  x\leq 2 \\&#10;      \$21 & if \enspace\enspace 2\ \textless \ x\leq 3 \\&#10;      \$28 & if \enspace\enspace 3\ \textless \ x\leq 4 \&#10;   \end{cases}
6 0
2 years ago
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