Answer:
B. 147 cm2
Step-by-step explanation:
The 40% of one hour is 24 minutes. U can get to that result by multiplying 60(one hour) by 0.40.
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Answer:
Step-by-step explanation:
Let and be independent random variables representing the lifetime (in 100 hours) of Type A and Type B light bulbs, respectively. Both variables have exponential distributions, and the mean of X is 2 and the mean of Y is 3.
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