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vagabundo [1.1K]
4 years ago
5

If a man is removed from the data set, the correlation decreases only slightly from 0.83 to 0.81. Why do you think the change in

the correlation is so small?
Mathematics
1 answer:
Gnesinka [82]4 years ago
3 0

Answer:

So we always look for R^{2} to find a correlation. 0.81 is known as, Large Positive Linear Association. There are many variables, in this case, this "man" is part of other variables. So by removing HIM, the correlation goes from 8 to 9. It is still significant. However, it can be because of many reasons. Perhaps he has diabetes or cancer and was removed. *Hypothetically

Step-by-step explanation:

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What are the coordinates of D’ when the quadrilateral is reflected across the line y = x? On a coordinate plane, quadrilateral A
natita [175]

Answer:

D' (1, 3)

Step-by-step explanation:

When reflected across the y = x line, the "x" and "y" coordinates switch.

If D is (3, 1), then:

x = 3

y = 1

Switch the "x" and "y" values, and rewrite as (x, y).

x = 1

y = 3

D' (1, 3)

7 0
3 years ago
Show how you will find the remainder when 2x^2 + 5x – 3 is divided x + 3 by using synthetic division.
andreyandreev [35.5K]

Given:

Dividend = 2x^2+5x-3

Divisor = x+3

To find:

The remainder by using the synthetic division.

Solution:

We have,

Dividend = 2x^2+5x-3

The coefficients of dividend are 2, 5, -3. Write these elements in the top row of synthetic division.

Divisor = x+3

The value of divisor is 0 at x=-3. So, write -3 on the left side of division.

Write down the first coefficient of dividend in bottom row, then multiply it by -3 and write the result below the next coefficient of dividend then add the coefficient and write the result in bottom row, then repeat the steps up-to last coefficient.

-3    |        2          5         -3

      |                    -6         3

------------------------------------------

               2         -1           0

-----------------------------------------

Here, the first two elements of the bottom row represent the coefficient of quotient and last element represent the remainder.

Therefore, the remainder is 0.

4 0
3 years ago
Four brands of lightbulbs are being considered for use in the final assembly area of the Ford F-150 truck plant in Dearborn, Mic
nlexa [21]

Answer:

Decison region :

Reject H0 : if χ² > 6.251

12.229

Step-by-step explanation:

Given :

Manufacturer A B C D

Unacceptable 29 17 9 22

Acceptable 171 183 191 178

Total 200 200 200 200

H0: There is no relationship between quality and manufacturer.

H1: There is a relationship.

Testing using the goodness of fit :

Chisquare = (observed - Expected)² / Expected

Expected Values:

19.25 19.25 19.25 19.25

180.75 180.75 180.75 180.75

Chi-Squared Values:

4.93831 0.262987 5.45779 0.392857

0.525934 0.0280083 0.581259 0.0418396

χ² = 4.93831 + 0.262987 + 5.45779 + 0.392857

+ 0.525934 + 0.0280083 + 0.581259 + 0.0418396 = 12.229

Degree of freedom, df = (4-1)(2-1) = 3*1= 3

The critical value,

χ² at 0.10, 3 = 6.251

Decison region :

Reject H0 : if χ² > 6.251

Reject H0 : 12.229 > 6.251

6 0
3 years ago
What is radical 7 times 7
lilavasa [31]
Its radical 49 :) (by radical 7 means square root of 7)
8 0
3 years ago
Jen is 7 cm shorter than twice Ann's height. together they are 146 cm. How tall is Jen?
zvonat [6]
136 in cm I pretty sure i’m correct
6 0
4 years ago
Read 2 more answers
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