Answer:
The new mean is 76.2
Step-by-step explanation:
Given
Given
Old mean = 71.3
Every observation is increased by 4.9.
Let the data set has N entries, then
The new mean would be
(71.3 *N + 4.9*N)/N
The new mean = 71.3 + 4.9 = 76.2
Pretty sure the answer is D.
Answer:
1/2
Step-by-step explanation:
find common denominator
simply the fractions
2/8 stays at 2/8 and 1/4 goes to 2/8
add the fractions and get 4/8
then simply by 2 and get 2/4
then simply again and get 1/2