A 1.26 kg block is held against a spring of force constant 2.0 103 N/m, compressing it a distance of 0.18 m. How fast is the block moving after it is released and the spring pushes it away?
In a city, 20% of the workers have incomes over $40,000 per year. A researcher chooses 1600 workers at random (with replacement) and finds that the mean is 320 and standard deviation is 16. what is the chance that between 320 and 336 of those have incomes over $40,000 per year?
which is more extreme: the 76.2in height of a man or 237.1lb weight of a man?
given the group of numbers: 8,9,10,10,10,11,11,11,12,13. which of the following are the same? a)range and mean,b)mode and median, c)standard deviation and mode d)mean and median, e)none