A poll surveyed 1696 internet users and found that 896 of them had posted a photo or video online. Can you conclude that more than half of internet users have posted photos or videos online? Use the a=0.01 level of significance and the -value method with the TI-84 Plus calculator.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25