Q3 The following are ages of 30 randomly picked HSTS102 students. 19 20 25 21 20 32 23 19 21 27

24 19 20 21 21 35 24 22 25 19

20 19 22 24 26 19 22 21 44 22

(a) Using computational formulae and showing each step of your calculations, find the

mean, median, variance, Q1 and Q3.

(b) Construct a box and whisker diagram and comment on the skewness of the data.​

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64