The scores on the statistics class final exam follow a normal distribution, with a mean of 80 and a standard deviation of 5. What percent of students scored 90 or better? A34%

B16%

C5%

D2.5%

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet