The mean score for freshman on an aptitude test at a certain college is 540, with a standard deviation of 50. assume the means to be measured to any degree of accuracy. what is the probability that two groups selected at random, consisting of 32 and 50 students, respectively, will differ in their mean scores bya) more than 20 points? b) an amount between 5 and 10 points

43lbs of tomatos cost $387. how much would 41lbs cost

Which of the following transformations will always produce a congruent figure?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality