suppose a batch of metal shafts produced in a manufacturing company have a variance of 2.25 and a mean diameter of 214 inches. if 78 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would be less than 213.8 inches? round your answer to four decimal places.

James needs to move this box. he has already checked it and knows it is not too heavy for him to lift. he also has a clear path and a place to safely set down the box. tell james what to do next to safely lift this box by placing the steps in the correct order. place the options on the left in the correct sequence by dragging them to the appropriate answer box to check your answer.

Find an equation in standard form of the parabola that passes through (-2, 9), (-4, 5), and (1, 0)

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories. if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?