Question

An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old.
By how much does the replacement change the average age of the members of the orchestra?

Answer 1

32-30 over 25

Answer 2

average age of orchestra now is lower for 0.08 years

Answer 3

By how much does the replacement change the median age of the members of the orchestra?

Answer 4

by 0.08

Answer 5

By how much does the replacement change the median age of the members of the orchestra?

Answer 6

-0.08

Answer 7

median = 0

Answer 8

it is the same thing, as we don't know the ages of each orchestra, so we will took the average, the main constants here is 25 by which the whole sum of ages is divided, so if whole number is X then by replacement it becomes X-2, therefore, as average=X/25, it is X/25-2/25

Answer 9

Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb.