How does a business determine the markup on a product or service?
1 answer:
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Answer:
20, 22, 28, 50
Step-by-step explanation:
The length and width could be:
1, 1, 24, 24
2, 2, 12, 12
3, 3, 8, 8
4, 4, 6, 6
1+1+24+24= 50
2+2+12+12= 28
3+3+8+8= 22
4+4+6+6= 20
Answer:
The probability that you test exactly 4 batteries is 0.0243.
Step-by-step explanation:
We are given that a new battery's voltage may be acceptable (A) or unacceptable (U). A certain flashlight requires two batteries, so batteries will be independently selected and tested until two acceptable ones have been found.
Suppose that 90% of all batteries have acceptable voltages.
Let the probability that batteries have acceptable voltages = P(A) = 0.90
So, the probability that batteries have unacceptable voltages = P(U) = 1 - P(A) = 1 - 0.90 = 0.10
Now, the probability that you test exactly 4 batteries is given by the three cases. Firstly, note that batteries will be tested until two acceptable ones have been found.
So, the cases are = P(AUUA) + P(UAUA) + P(UUAA)
This means that we have tested 4 batteries until we get two acceptable batteries.
So, required probability = (0.90 0.10
0.10
0.90) + (0.10
0.90
0.10
0.90) + (0.10
0.10
0.90
0.90)
= 0.0081 + 0.0081 + 0.0081 = <u>0.0243</u>
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Hence, the probability that you test exactly 4 batteries is 0.0243.