I need help with my AP statistics class. If a business has a daily gross income of $420 dollars with a standard deiation of $50, then what is the relatie frequency corresponding to a daily gross income of $520 or more assuming that the daily gross income is normally distributed.

Question

anonymous · Answer

do u know the formula for relative frequency

anonymous · Answer

no, that is why i was kinda asking, my textbook ain't help, and neither is google, i was helping someone could tell me the formula so i could solve it

amistre64 · Answer

is the 420 spose to be an average or a mean?

amistre64 · Answer

it sounds like this is describing a normal distribution, with a mean of 420, and a standard deviation of 50; and asking what the value is of X=520