In the accompanying diagram, about 68% of the scores fall within the shaded area, which Is symmetric about the mean. The distribution is normal and the scores in the shaded area
range from 50 to 80. What is the standard deviation of the scores in the distribution?

Match each function with the corresponding function formula when h(x)=5-3x and g(x)=-3+5

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125