Find the critical value za/2 or ta/2
99%; n = 15; o is unknown; population appears to be normally distributed.

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Find the difference (8ab+a+2) - (3ab+6)

Which number completes the inequality? 2/3 < _ < 7/9