9,900 bars soap 6 bars in a package put 48 packages in a box. how many boxes were completely filled?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

A50% increase followed by 33 1/2% decrease

Find the root(s) of f (x) = (x- 6)2(x + 2)2.