Mathematics, 31.07.2019 04:20, miles45
Za report states that the cost of repairing a hybrid vehicle is falling even while typical repairs on conventional vehicles are getting more expensive. the most common hybrid repair, replacing the hybrid inverter assembly, had a mean repair cost of $3 comma 927 in 2012. industry experts suspect that the cost will continue to decrease given the increase in the number of technicians who have gained expertise on fixing gas-electric engines in recent months. suppose a sample of 100 hybrid inverter assembly repairs completed in the last month was selected. the sample mean repair cost was $3 comma 870 with the sample standard deviation of $500. complete parts (a) and (b) below. a. is there evidence that the population mean cost is less than $3,927? (use a 0.01 level of significance.)
Answers: 2
Mathematics, 21.06.2019 19:30, Riley3833
Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2
Answers: 1
Za report states that the cost of repairing a hybrid vehicle is falling even while typical repairs o...
Social Studies, 28.07.2020 17:01