20 Points Which one of the following series is convergent? (4 points) the summation from 1 to infinity of the quotient of 1 and the quantity n plus 2
the summation from 1 to infinity of the quotient of the inverse tangent of n and the quantity 1 plus n squared
the summation from 1 to infinity of the quotient of n and the sum of 1 and n squared
the summation from 1 to infinity of the quotient of 1 and the 5th root of the quantity 2 times n minus 1

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.