The average number of acres burned by wildfires in the United States is 780 acres with standard deviation 500 acres. Since some wildfires burn thousands of acres, the distribution of acres burned by wildfires is strongly right skewed. Suppose a SRS of 100 wildfires is taken. Find the probability that the sample mean number of acres burned is greater than 820 acres. 0.2119 0.4681 0.7881 000 This probability cannot be calculated because we do not know the distribution of

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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The average number of acres burned by wildfires in the United States is 780 acres with standard deviation 500 acres. Since
some wildfires burn thousands of acres, the distribution of acres burned by wildfires is strongly right skewed. Suppose a
SRS of 100 wildfires is taken. Find the probability that the sample mean number of acres burned is greater than 820 acres.
0.2119
0.4681
0.7881
This probability cannot be calculated because we do not know the distribution of
Transcribed Image Text:The average number of acres burned by wildfires in the United States is 780 acres with standard deviation 500 acres. Since some wildfires burn thousands of acres, the distribution of acres burned by wildfires is strongly right skewed. Suppose a SRS of 100 wildfires is taken. Find the probability that the sample mean number of acres burned is greater than 820 acres. 0.2119 0.4681 0.7881 This probability cannot be calculated because we do not know the distribution of
Expert Solution
Step 1

Here, mean is 780 and standard deviation is 500.

Sample is 100

We will use z-standard normal distribution.

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