Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviatio Which test score represents the top 20%, rounded to the nearest whole number? Find the z-table here. 426 448 532 554

Ten times the square of a non-zero number is eqaul to ninety times the number

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?