Chapter 3
97. Margola Company produces hand-held calculators. The company controller wanted to calculate the fixed and variable
costs associated with the maintenance cost incurred by the factory. Data for the past four months were collected.
Maintenance Machine
Month cost hours
June $4,180 328
July 3,956 310
August 4,686 386
September 4,240 352
Coefficients shown by a regression program are:
Intercept 1,150
X Variable 1 9.06
Using the results of regression, the cost formula for maintenance cost was:
a. $1,150 × machine hours.
b. ($4,686 − $3,956) / (386 − 310).
c. $9.06 × machine hours.
d. $1,150 + ($9.06 × machine hours).
98. PristinDay Company produces handheld calculators. The company controller wanted to calculate the fixed and
variable costs associated with the maintenance cost incurred by the factory. Data for the past four months were collected
as follows: