How much do american families spend on entertainment each month. a survey was conducted and the amounts spent on entertainment in the previous month were recorded. assuming that the population standard deviation is $50 determine the 99% confidence interval estimate of the mean monthly amount of money spent by american families. source: adapted from the bureau of labor statistics.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?