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
Vedmedyk [2.9K]
3 years ago
13

10. Answer True or False for the following statements. If false, justify what would make the statement true. a. If the least-squ

ares equation relating the independent variable x and the dependent variable y for a given problem is y = 2x + 5, then an increase of 1 unit in x is associated with an increase of 2 units in y. b. If your computed correlation coefficient is r = +1.2, then you have better than a perfect positive correlation. c. A student might expect that there is a positive correlation between the age of his or her laptop and its resale value. d. In simple regression analysis, if the slope of the line is positive, then there is a positive correlation between the dependent variable y and the independent variable x. e. If there is no correlation between the independent and dependent variables, then the value of the correlation coefficient must be –1.
Mathematics
1 answer:
Free_Kalibri [48]3 years ago
7 0

Answer:

a) TRUE

b) FALSE

c)  FALSE

d) TRUE

e) FALSE

Step-by-step explanation:

a)

TRUE because the slope of the correlation line is 2  and this is the rate of change of y respect to x

b)

FALSE

The correlation coefficient r is always between -1 and 1, so it can never be greater than one

c)

FALSE

A student might expect that there is a positive correlation between the age of their laptop and its resale value only if after collecting a large enough sample of data that relates age of the student and price of resale of their laptop, he or she finds that there is a positive correlation coefficient r>0

d)

TRUE

If there is a positive correlation, then the greater the x, the greater the y

e)

FALSE

If there is no correlation between the independent and dependent variables, then the value of the correlation coefficient must be 0.

You might be interested in
Chris bought six pounds of apples for 10.80. How much would 15 pounds of apples cost at the same price per pound?
love history [14]

Answer: $27

Step-by-step explanation: First we would like to know how much it costs per pound of apples. To find that out simply divide 10.80 by 6 to find the price for one pound. 10.80/6 = $1.80 per pound of apples.

Now, we want to find out how much 15 pounds of apples cost. Simply multiply 1.80 x 15 to find the price of 15 pounds of apples. 1.80 x 15 = $27 for 15 pounds of apples.

5 0
3 years ago
Enter the answer to the nearest tenth. Another home business has an average income of $1.200.00 per month with a standard deviat
Nonamiya [84]

Answer: -1.7

Step-by-step explanation:

Given : Another home business has an average income of $1.200.00 per month with a standard deviation of $100.00.

i.e.\mu=\$1200.0

\sigma=\$100.00

Let x represents the monthly income.

Since . z=\dfrac{x-\mu}{\sigma}

For x= 1030 , we have

z=\dfrac{1030-1200}{100}=-1.7

Hence, the required z-score = -1.7

5 0
3 years ago
What is 8+7times15 so what is it tell me now
Inessa05 [86]
The answer is 113. As said by the calculator


5 0
3 years ago
Simon bought 3.5 pounds of Beef on sale for $1.25 per pound at HEB. If Simon gave the cashier $10.00, how much change would he r
Elenna [48]

Answer:

5.625

Step-by-step explanation:

5 0
3 years ago
Find the arithmetic mean of the sales per day in a fair price shop in a week.
BabaBlast [244]

Answer:

11060.83

Step-by-step explanation:

Sum = 10000 + 10250 + 10790 + 9865 + 15350 + 10110

= 66365

No. of days (N) = 6

Arithmetic mean = Sum/ N

= 66365/6

= 11060.83

4 0
2 years ago
Read 2 more answers
Other questions:
  • Starting at its rightmost position, it takes 1 second for the pendulum of a grandfather clock to swing a
    15·2 answers
  • Which of the following represents the most accurate estimation of 65+77
    5·1 answer
  • 80 pts! Solve the equation. <br> Please select the best answer from the choices provided.
    10·1 answer
  • Find the cube root of x^54.
    13·1 answer
  • We want to factor the following expression: 25x^2−36y^8 We can factor the expression as (U+V)(U-V) where U and V are either cons
    7·1 answer
  • HELLPP ASAP!!!! <br> 1. Find the unknown side lengths in these right triangles.
    14·2 answers
  • Which number is an integer?<br> -3/4<br><br> 1/5<br><br> 2<br><br> 4/2/3
    12·2 answers
  • Help me with this please
    8·1 answer
  • In an instant lottery, your chances of winning are 0.1. if you play the lottery five times and outcomes are independent, the pro
    13·1 answer
  • I've done the y = equations but I don't know how to do this one.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!