Answer:
the answer is 4 out of 10 or 4/10 = 0.4
Step-by-step explanation:
from the question which says that the ages of five randomly chosen cars in a parking garage are determined to be 7, 9, 3, 4, and 6 years old. If one considers this sample of 5 in groups of 3
solution
the number of groups of 3 that are possible implies that
5 choose 3 = 10 possible groups of 3
also,
the number of these groups of 3 that have a true mean of more than 6years needs to be considered.
The following groups add up to 19 or more ; (9,7,6), (9,7,4), ( 9,7,3) , (9,7,4).
therefore the answer is 4 out of 10 or 4/10 = 0.4
