Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.55 2.55 and a standard deviation of 0.43 0.43 . Using the empirical rule, what percentage of the students have grade point averages that are between 2.12 2.12 and 2.98 2.98 ?

What is the square root of 45? (step by step working plz)

Find the nonpermissible replacement for binthis expression.b2/5b +5

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice