1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jolli1 [7]
3 years ago
12

1 (06.06 LC

Mathematics
1 answer:
Anika [276]3 years ago
5 0

The question is incomplete. Here is the complete question.

A cell phone company is interested in the relationship between the number of texts per minute for their customers (y) and customer age. Based on the data collected, the least-squares regression line is y=3.27+2.14x, where x is the number of years by which age exceeds 12. Which of the following statements best describes the meaning of the slope of the least-squares regression line?

a. For each increase in age of 1 year, the estimated number of texts per minute increases by 3.27.

b. For each increase in age of 1 year, the estimated number of texts per minute increases by 2.14.

c. For each increase of one text per minute, there is an estimated increase in age of 3.27 years.

d. For each increase of one text per minute, there is an estimated increase in age of 2.14 years.

e. The slope has no meaning because the units of measure for x and y are not the same.

Answer: b. For each increase in age of 1 year, the estimated number of texts per minute increases by 2.14.

Step-by-step explanation: The <u>least-squares</u> <u>regression</u> is a method of fitness, i.e., it fits a data set of number into an equation.

In this case, the relationship between number of texts per minute and customer age is given by a line equation:

y=3.27+2.14x

in which, y represents the number of texts per minute and x is the age.

In a line equation, slope is the measure of steepness, i.e., how inclined the line is.

In the least squares regression line, slope is 2.14 and it means, in each additional year, the number of texts increase by a factor of 2.14, which is the correct alternative.

You might be interested in
Factor thé expression 27b+24
kati45 [8]

Answer: 3(9b+8)

Step-by-step explanation: Have a brilliant day of learning!-Lily ^-^

6 0
3 years ago
What Is 9+10? Please Tell Me. Is It 19 Or 21!?
mrs_skeptik [129]
9+10=19
proof, 9=1 plus 1 9 times (to lazy to write it out)
10=1 plus 1 10 times(to lazy)
so 1+1+1+1+1+1+1+1+1 + 1+1+1+1+1+1+1+1+1+<span>1 = 19</span>
5 0
3 years ago
Read 2 more answers
8x – 3y = 1<br> –2x + 3y = 11<br> Solve a Linear System by Elimination
alexdok [17]
I think it’s x= 2 but i would check that
8 0
3 years ago
21 less than tree-fifths of a number
MissTica

Answer:

\frac{3}{5}x - 21

Step-by-step explanation

Three-fifths of a number means \frac{3}{5}x and 21 less than that number means \frac{3}{5} x - 21.

3 0
3 years ago
(x+40)° what is x? plssss help meee thank you !!
SVEN [57.7K]

Answer:

I got 103˚ because I put (x+40)˚ into the calculator

5 0
3 years ago
Other questions:
  • According to a poll, 56% of voters support funding a new community center. A surveyor randomly selects 75 voters and asks each v
    13·1 answer
  • How many line segments would you use to draw 14 pentagons
    5·1 answer
  • Your Student Government Association decided to do a fundraiser to raise
    11·1 answer
  • Plz help me I will mark u brainlest if u do
    12·1 answer
  • For what value of b will f(x)= x^2 + bx + 900 have -30 as its only zero? PLEASE HELP!!
    10·1 answer
  • When a child is born,
    8·2 answers
  • Monica and jaimy are creating number patterns. Monica uses the rule . "Multiply by 3 and stats at 4 .Jaimy uses the rule "add 6
    6·1 answer
  • I need some to solve it today plssssssssssssss
    12·1 answer
  • A certain town never has two sunny days in a row. Each day is classified as being either sunny, cloudy (but dry), or rainy. If i
    6·1 answer
  • Help!<br> Find the measurement indicated in the trapezoid.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!