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pishuonlain [190]
3 years ago
14

Suppose a certain forest fire doubles in size every 12 hours. If the initial size of the fire was 1 acre, how many acres will th

e fire cover in 2 days?
Mathematics
1 answer:
sineoko [7]3 years ago
8 0
The forest fire will be 4 acres
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A packet of garden seeds contains 250 seeds. The information printed on the packet indicates that the germination rate for this
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Answer:

Expectation=240

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Step-by-step explanation:

This is a binomial probability function with n=250 and probability of success is 96%

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E(X)=np\\\\=250\times 0.96\\\\=240

Hence, the expected germination is 240 seeds

b. From a above, we have the value of p=0.96 and n=250.

The standard deviation of germination is therefore calculated using the formula:

\sigma=\sqrt{np(1-p)}, \ \ \ \\\\=\sqrt{250\times 0.96(1-0.96)}\\\\\\=3.098

Hence, the standard deviation of germination is 3.098

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