Dallas Company uses a job order costing system. The company's executives estimated that direct labor would be $2,310,000 (210,000 hours at $11/hour) and that factory overhead would be $1,510,000 for the current period. At the end of the period, the records show that there had been 190,000 hours of direct labor and $1,210,000 of actual overhead costs. Using direct labor hours as a base, what was the pre-determined overhead rate? a. $5.17 per direct labor hour.
b. $7.00 per direct labor hour.
c. $6.42 per direct labor hour.
d. $5.84 per direct labor hour.
e. $6.25 per direct labor hour.

Xie company identified the following activities, costs, and activity drivers for 2017. the company manufactures two types of go-karts: deluxe and basic. activity expected costs expected activity handling materials $ 625,000 100,000 parts inspecting product 900,000 1,500 batches processing purchase orders 105,000 700 orders paying suppliers 175,000 500 invoices insuring the factory 300,000 40,000 square feet designing packaging 75,000 2 models required: 1. compute a single plantwide overhead rate, assuming that the company assigns overhead based on 125,000 budgeted direct labor hours. 2. in january 2017, the deluxe model required 2,500 direct labor hours and the basic model required 6,000 direct labor hours. assign overhead costs to each model using the single plantwide overhead rate.

Describe three scenarios in which you might utilize mathematics to investigate a crime scene, accident scene, or to make decisions involving police practice. be sure to explain how math is used in police as they work through each scenario.

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.