Answer:
b= -4.68
Step-by-step explanation:
Hello!
We have to study variables:
Y: Monthly coffe sales
X: Price per pound of coffe ($)
The estimate regression line is
^Yi= a + bxi ∀ (i=1,.....,10)
The slope of the estimated regression line is represented by b.
The formula I'll use to calculate it is:
b= [n∑xiyi -(∑xi)*(∑yi)]/ n∑xi²-(∑xi)²
To calculate b we need to do some auxiliary calculations:
∑xiyi= 4213.15
∑xi= 87.47
∑yi= 545
∑xi²= 883.3703
Then we replace the formula:
b= [10*4213.15-(87.47)*(545)]/ n883.3703-(87.47)²
b= -4.68
I hope you have a SUPER day!
Your equation would look a lot like this
c(t) = 8.5t + $40
love, the Pineapple.
Answer:
the one on the upper left with the triangular form
Step-by-step explanation:
all the others only represent one of the possibilities
Answer:
D. With a p-value of 0.305, we do not have statistically significant evidence that the population mean distance traveled to class is different for men and women.
Step-by-step explanation:
What we are testing?
If the distance students travel to get from class is statistically different for men and women.
How we take the decision?
The significance level is the standard of 0.05.
If the p-value is greater than 0.05, there is no evidence that the distances are statistically different for the population.
If the p-value is less than 0.05, there is evidence that the distances are statistically different different for the population..
In this question:
p-value: 0.305 > 0.05, so there is no statistically significant evidence that the means are difference, and the correct answer is given by option d.
