Answer:
y = 7.8x + 26
Step-by-step explanation:
Given the following :
Pearson's r = 0.78
Average consumption of ice cream = 5 grams per week (m) with Standard deviation (sd) = 1.5 grams
Average weight = 65 kg with standard deviation of 15kg
Formular for the regression line :
General regression formula :
y = mx + c
y = predicted variable ; m = slope or gradient ; x = predictor variable ; c = intercept
Gradient (m) = change in y / change in x
m = (sd y / sd x) * r
m = (sd weight / sd ice cream) × r
m = (15 / 1.5) × r
m = 10 × 0.78 = 7.8
Intercept:
mean of weight(y) - [Slope×mean of icecream(x)]
65 - [7.8 × 5]
65 - 39 = 26
Hence,
y = 7.8x + 26
One time because 50 x 50 equals 100 and that to large
The volume of the baseball is <span>65.8
r = 1/2 d
r = 1/2 5.1
r = 2.505
</span>V = 4/3 π r^3
V = 4/3 π 2.505^3
V = 65.8
I hope this helps!
Answer:
expression: x^3-2
If the number is 5: 123
Step-by-step explanation:
