042 sf3 echo

Students in SC 130 Physical Science were measuring bars of Dial Soap and obtained the following data:

Volume (cm³) x	Mass Dial (g) y
0	0
35	39.3
45	54.7
55	65.7
60	72.5
75	86.8

1. What is the sample size for this data?
2. Calculate the slope of the linear regression for the Dial soap.
3. Calculate the y-intercept of the linear regression for the Dial soap.
4. Using the slope and intercept, calculate the mass of a bar of Dial soap with a volume of 100 cm³
5. Using the slope and intercept, calculate the volume of a bar of Dial soap with a mass of 100 grams.