1. Mario has 12 boxes of pizza. He cut each pizza into eights. How many pieces of pizza will there be? 2. Tony had 5 1/2 kilograms of sugar. How many cakes can he take if he will use 1/4 kilogram of sugar per cake?

3. What is the average 2 1/4 and ? 3 1/3

4. Jay will put 4/5 mg of salt in each plastic. How many plastics will he need for 14 mg of salt?

The investigating team suspected that there were differences in the cost of repairing cars in workshop i and workshop ii. the investigating team suspected that the costs raised by workshop i were greater than workshop ii. for that they tested the repair of 15 cars in each workshop to see the cost of repairs. the decision of the right hypothesis to prove the suspicion above is a. h0 : μ1- μ2­ = 0; ha : μ1- μ2­ ≠ 0 b. h0 : μ1- μ2 ≥ 0; ha : μ1- μ2 < 0 c. h0 : μd ≥ 0; ha : μd < 0 with μd = μ2- μ1 d. h0 : μd = 0; ha : μd ≠ 0 with μd = μ2- μ1 e. h0 : μ1- μ2 = 0; ha : μ1- μ2 ≥ 0