Answer:
a)Slope:
Intercept:
b)
And the determination coeffecient is
Step-by-step explanation:
Data given and definitions
The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.
The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"
When we conduct a multiple regression we want to know about the relationship between several independent or predictor variables and a dependent or criterion variable.
n=110,

Part a
The slope is given by this formula:
If we replace we got:
We can find the intercept with the following formula
We can find the average for x and y like this:
And replacing we got:
Part b
In order to calculate the correlation coefficient we can use this formula:
For our case we have this:
n=110,
So we can find the correlation coefficient replacing like this:
And the determination coeffecient is
Answer:
The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor
(75.4206, 86.5794)
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given that the mean of the sample = $81 k</em>
<em>Given that the size of the sample 'n' = 23</em>
<em>Given that the standard deviation for the salaries is $13 k</em>
<u><em>Step(ii):-</em></u>
<u><em>98% of the confidence interval for the true average salary of Knirhsdaeh employees is determined by</em></u>
<u><em /></u>
<u><em /></u>
<u><em>Degrees of freedom = n-1 = 23-1 =22</em></u>
<u><em /></u>
<u><em /></u>

( 81 - 5.57940 , 81 + 5.57940)
(75.4206, 86.5794)
<u><em>Final answer:-</em></u>
The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor
(75.4206, 86.5794)
Answer:
false
plz tell me if im wrong i hope i helped
Answer: 3/7 < 4/8 < 2/3
Step-by-step explanation: Hope it helps
Answer:
f(x) = -2x +7
Step-by-step explanation:
The 2-point form of the equation for a line is suitable for this. For points (x1, y1) and (x2, y2), the equation is ...
y = (y2 -y1)/(x2 -x1)(x -x1) +y1
For the given points (0, 7) and (3, 1), the equation is ...
y = (1 -7)/(3 -0)(x -0) +7
y = -6/3x +7 . . . . . . . . simplify.
We can use f(x) for y to get ...
f(x) = -2x +7