Answer:
The expectation for the drilling company is $8,375.
Step-by-step explanation:
We have that the expectation for the drilling company is:
is the income that is expected in relation to natural gas being hit. There is a 1/20 probability that gas is hit. If gas is hit, the income will be $260,000. So
is the income that is expected in relation to oil being hit. There is a 1/40 probability that oil is hit. If oil is hit, the income will be $815,000. So
25,000 is subtracted from the expectation because it is the cost to sink a test well.
So,
The expectation for the drilling company is $8,375.
The answer is D because it’s a community of different animals and plants. It’s not C because population is only for one type of animals or plants
John’s father will pay $300.
If you divide $500 into 5 equal parts, each part will be comprised of $100. In other words, 1/5 of $500 is $100. This is proven because $100 • 5 = $500.
But since you are trying to find 3/5 of $500, (not 1/5, which is what we just found). This means we must find the total value of 3 of the five equal parts. To do this, multiply
$100 • 3, since $100 is 1/5 of $500.
$100 • 3=$300, so the answer is B. Johns father will pay $300.
Answer:
A. 0.009899
B. 0.005624
Step-by-step explanation:
Data:
Let the probability that an item is defective = 
The probability that the item is not defective = 
The probability that the fifth item is defective = 
= 0.009899
Probability that one in 5 items is defective = 0.005624
3:1
,,,,,,,,,,,,,,hope this helps
