<u>Answer: </u>
The expected value is 27.75 million and standard deviation is 81.5%
<u>Explanation:</u>
Given the sample was selected from the population
The population was of 150 million people
<u>(a) Expected Value
</u>
Given that the adults whose income is below poverty line is 18.5%
Expected value = 18.5% of 150 million
=
= 27.75 million
Therefore, the expected value is 27.75 million
<u>(b) Standard deviation
</u>
Standard deviation =
Standard deviation is 81.5%