claim: the mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. for a random sample of 147 adult males, the mean pulse rate is 69.2 bpm and the standard deviation is 10.6 bpm. find the value of the test statistic.

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %