One indicator of an outlier is that an observation is more than 2.5 standard deviations from the mean. If a data set has mean 80 and standard deviation 3, is 90 a suspect outlier?

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Write the equation in logarithmic form m^x=n

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x