An engineer has designed a valve that will regulate water pressure on an automobile engine. The vahe was tested on 100 engines and the mean pressure was 72 Ibs/square inch. Assume the variance is known to be 0.81. If the valve was designed to produce a mean pressure of 73 is square inch is there sufficient evidence at
the 0.01 level that the valve does not perform to the specifications?
State the null and alternative hypotheses for the above scenario.

True or false: banks are required to make electronically deposited funds available on the same day of the deposit

If you were running a company, what are at least two things you could do to improve its productivity.

Vulcan flyovers offers scenic overflights of mount st. helens, the volcano in washington state that explosively erupted in 1982. data concerning the company’s operations in july appear below: vulcan flyovers operating data for the month ended july 31 actual results flexible budget planning budget flights (q) 56 56 54 revenue ($350.00q) $ 16,500 $ 19,600 $ 18,900 expenses: wages and salaries ($3,300 + $91.00q) 8,354 8,396 8,214 fuel ($31.00q) 1,904 1,736 1,674 airport fees ($870 + $35.00q) 2,730 2,830 2,760 aircraft depreciation ($11.00q) 616 616 594 office expenses ($240 + $1.00q) 464 296 294 total expense 14,068 13,874 13,536 net operating income $ 2,432 $ 5,726 $ 5,364 the company measures its activity in terms of flights. customers can buy individual tickets for overflights or hire an entire plane for an overflight at a discount. required: 1. prepare a flexible budget performance report for july that includes revenue and spending variances and activity variances.