Question

1. The mean of 10 observations is 15. If one observation 15 is added, then the new mean is __________________. 2. The mean weight of 8 numbers is 15kg. If each number is multiplied by 2. What will be the new mean? 3. The mean of 5 numbers is 18. If one number is excluded, their mean is 16. Find the excluded number. 4. The mean of 75 numbers is 35. If each number is multiplied by 4. Find the new mean. Please answer the question fast and correctly and write the steps! Thank you!

Answer 1

Answer:

1 - ( 15*15 - 15*10)

75

is the answer

Answer 2

HEY MATE...!

HERE IS UR ANSWER...!

1) 15

2) 30

3) 26

4) 140

HOPE IT HELPS...!

THANKS.