Suppose that you were in science class and that the next two people to come into your classroom were a girl five feet ten inches tall and a boy five...

Suppose that you were in science class and that the next two people to come into your classroom were a girl five feet ten inches tall and a boy five feet nine inches tall. Let each of the 30 students already in the class measure the two new arrivals to the nearest foot. The answer for both is six feet. Has repeated measurement improved the accuracy? Suppose that the hypothesis to be tested was that girls are taller than boys. This time the boy and the girl were each measured 30 times with a ruler that read to 1,400 of an inch. Could we conclude that the repeated measurements really supported the hypothesis?