Engineering, 27.11.2019 20:31 wazzuphottie6112
You want to rent an unfurnished one-bedroom apartment in boston next year. the mean monthly rent for a random sample of 10 apartments advertised in the local newspaper is $2534. assume that the standard deviation is $670. find the 90%, 95%, and 99% confidence intervals for the mean monthly rent for this category of apartments. look at the 95% confidence interval and say whether the following statement is true or false. "this interval describes the price of 95% of the rents of all the unfurnished one-bedroom apartments in the boston area." be sure to explain your answer.
Answers: 3
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:20
An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid
Answers: 3
Engineering, 04.07.2019 18:20
A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.
Answers: 3
Engineering, 04.07.2019 19:10
Which of the following is the most important advantage of a large field of view? a. allows larger areas to be examined b. relieves eyestrain c. minimizes parallax errors. d. increases precision in proportion to the in- crease in field of view
Answers: 2
You want to rent an unfurnished one-bedroom apartment in boston next year. the mean monthly rent for...
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