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Softa [21]
2 years ago
12

Consider the following expression 4b+2+7a Select all of the true statements below.

Mathematics
1 answer:
Ulleksa [173]2 years ago
8 0

Answer:

a , c and d

Step-by-step explanation:

a , c and d are correct

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According to an article in Newsweek, the rate of water pollution in China is more than twice that measured in the US and more th
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(a) 0.119

(b) 0.1699

Solution:

As per the question:

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Standard deviation, \sigma = 2.8 million ponds/day

Now,

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(b) The probability when the water pollution is in between 6.2 and 9.3 million pounds/day:

P(6.2 < X < 9.3) = P(\frac{6.2 - 11.7}{2.8} < \frac{X - \mu}{\sigma} < \frac{9.3 - 11.7}{2.8})

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