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The average cost of an IRS Form 1040 tax filing at Acme Tax Service is $141.00. Assuming a normal distribution, if 85 percent of
The average cost of an IRS Form 1040 tax filing at Acme Tax Service is $141.00. Assuming a normal distribution, if 85 percent of the filings cost less than $152.00, what is the standard deviation? Hint: Use Excel or Appendix C-2 to find the z-score. (Round your answer to 2 decimal places.) Standard deviation
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Numerical Analysis
Authors: Richard L. Burden, J. Douglas Faires
9th edition
538733519, 978-1133169338, 1133169333, 978-0538733519
