If you want to be 95% confident of estimating the population mean to within a sampling error of ±20 and the standard deviation is assume size is required? A Click the icon to view a table of values for the standardized normal distribution. on 1 The sample size required is 138 (Round up to the nearest integer.) ion 5

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A: Explanation of the answer is as follows

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A: Floor value of x  is given as the greatest integer that is less than or equal to x

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A: From the provided information, Profit/Loss (x) Probability P(x) $40,000 0.06 $30,000 0.20…