Statistics And Probability Question 324
Question: The mean weight per student in a group of seven students is 55 kg. if the individual weights of six students are 52, 58, 55, 53, 56 and 54, then the weight of the seventh student is
Options:
A) 55 kg
B) 60 kg
C) 57 kg
D) 50 kg
Show Answer
Answer:
Correct Answer: C
Solution:
[c] The total weight of seven students is $ 55\times 7=385kg $ The sum of the weights of six students is $ 52+58+55+53+56+54=328kg $ Hence, the weight of the seventh student is $ 385-328=57kg. $
BETA
