Ractions in their lowest term: d. 2 Literes to 2250 millilitres
e. 3 min 54 sec to 2 min 6 sec
f. 6 litres to 10 c. c
2. Express the
a. 4 Birr to 16 cents
b. 5 days to 100 hrs
c. 3.5 kg to 6500 grams
3. Find two numbers whose ratio is 3 to 5 and whose sum is 88.
4. The ratio of two numbers is 7:3 and their sum is 50, find the two numbers.
5. The ratio of the measures of the angles of a triangle is 1:2:3. Find the
measure of each angle.
6. Four friends contribute the sum of money to a charitable organization in the
ratio 1:3:5:7. If the largest amount contributed is Birr 35. Calculate the total
amount contributed by the four people.
7. If 2A:3B =5:6 and 3B:2C =36:15, then find A:C.
8. If a:b =3:2 find the value of a+b.
a-b
9. Two numbers have ratio 12:5. Their difference is 49. Find the two numbers.​

You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in: