Answer:
-95.78
Step-by-step explanation:
As the researcher decided to make the number of parties attended per week the explanatory variable, this would be variable x in the regression line, and of course, the variable y would be the number of text messages sent per day.
After constructing the linear regression equation, the researcher found that an approximate value 
for the actual value of y could be represented by the line
Since this is an approximate value, it is not expected that it coincides with the actual value of y. We define then the residual for each value of x as the difference between the actual value of y and the approximation for the given x.
For the value x = 2 (the student attended 2 parties that week) the actual value of y is 20 (the student sent 20 text messages per day that week).
The approximate value of y would be according to the regression line
Hence, the residual value for x=2 would be
Notice that the variation of the mean by observing the dot plot alone shows that there is a slight difference in the means but not one that is significant. Therefore, the correct answer is D.
<h3>What is the definition of Mean Difference?</h3>
Mean difference is a statistical term that is used to measure the definite difference between the mean value of distribution among two sets of data.
In this case, the two sets of data are data from the new balls and the data from the old ball.
See the link below for more about Mean Difference:
brainly.com/question/814700
Answer:
There are 3478761 ways to select the first 5 numbers
Step-by-step explanation:
As understood from the statement of this problem we assume that it does not matter the order in which the first 5 white balls are selected.
In this case it is a combination.
So, what we want to know is how many ways you can choose 5 white balls out of 55.
Then we use the formula of combinations:
Where you have n elements and choose x from them.
Then we look for:
Um I think only one, pretty sure
Answer:
is parallel
is perpendicular
Step-by-step explanation:
(im answering this assuming that says y = -x + 6)
is parallel because the slope remains the same
is perpendicular because it reflects the line
