Which is more ten yards or 357 inches?

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?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

What is the product? a-3/15a × 5/a-3