A) 30.24
B) 28.72
C) 24.82
D) 30.32
Correct Answer: B
Solution :
The total of 32 observations\[=32\times \]their mean\[=32\times 28=896\] Similarly, the total of remaining 18 observations = 540 Hence, the total of 50 observation \[=896+540=1436\] Now, the required mean \[=\frac{1436}{50}=28.72.\]
You need to login to perform this action.
You will be redirected in
3 sec
