Ejercicios para la actividad 7. 1. Contrastar que, con el cambio de modelo de una máquina, el proceso se ha hecho más
variable. La varianza con el modelo anterior fue de 23.15. Se realizan 25 observaciones con el
nuevo modelo obteniéndose una varianza muestral
2. de 40.5. Utilice un 99% de confianza para realizar el contraste. (Contraste bilateral)

Renaldo scanlon is a financial consultant. he earns $30 per hour and works 32.5 hours a week. what is his straight-time pay?

About time delivery co. incurred the following costs related to trucks and vans used in operating its delivery service: classify each of the costs as a capital expenditure or a revenue expenditure. 1. changed the oil and greased the joints of all the trucks and vans. 2. changed the radiator fluid on a truck that had been in service for the past four years. 3. installed a hydraulic lift to a van. 4. installed security systems on four of the newer trucks. 5. overhaul the engine on one of the trucks purchased three years ago. 6. rebuilt the transmission on one of the vans that had been driven 40,000 miles. the van was no longer under warranty. 7. removed a two-way radio from one of the trucks and installed a new radio with a greater range of communication. 8. repaired a flat tire on one of the vans. 9. replaced a truck's suspension system with a new suspension system that allows for the delivery of heavier loads. 10. tinted the back and side windows of one of the vans to discourage theft of contents.

Ursus, inc., is considering a project that would have a five-year life and would require a $1,650,000 investment in equipment. at the end of five years, the project would terminate and the equipment would have no salvage value. the project would provide net operating income each year as follows (ignore income taxes.):