I really need help please
1 answer:
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Answer:
a)20$
b)46,1$
c)0,3336
d)No concerns
Step-by-step explanation:
A) To find expected difference of cost of medical care for dogs and cats we can simply subtract average costs of cats and dogs.
Expected difference will be 20$.
B) To find the standard deviation of that difference, we need to square deviations and add them and square root it again.
Expected difference will be 46,1$.
C)We need to find the Z value to find the probability of more expensive dogs than cats in a Vet vise.
Z value of the function is -0,434
From the Z table that you can find at the attachment. The probability is %33,36 or 0,3336
D) This is a subjective part. I don't have any concerns
Answer:
it take 41 minutes to 14 people to paint 14 walls
Step-by-step explanation:
we know that
It takes 41 minutes for 9 people to paint 9 walls.
Divide the number of people by the number of walls
so
it take 41 minutes to one people to paint one wall
therefore
it take 41 minutes to 14 people to paint 14 walls