Question

09.) If arithmetic mean of group of 50 students observation is 120. Find the mean of new observations if each observation is,
1. Increased by 5.
2. Decreased by 20.
3. Doubled and Increased by 30.
4. Reduced to one fourth.
5. Increased by 5 and doubled.​

Answer 1

Answer:

My flower bed of roses and sweet

Step-by-step explanation:

Economic notes