A data set has a normal distribution with a mean of 31 and a standard deviation of 8. About what percent of the data are between 23 and 39.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Two groups of students were asked how many hours they spent reading each day. the table below shows the numbers for each group: group a 1 2 1 1 3 3 2 2 3 group b 3 2 3 2 2 2 1 1 2 based on the table, which of the following is true? the interquartile range for group a students is 0.5 less than the interquartile range for group b students. the interquartile range for group a students is equal to the interquartile range for group b students. the interquartile range for group a employees is 0.5 more than to the interquartile range for group b students. the interquartile range for group a employees is 1 more than the interquartile range for group b students.