In 2009, the average charge for tax preparation by H&R Block, Inc. was $187. Assuming a normal distribution and a standard deviation of α= $20, what proportion of H&R Block’s tax preparation fees were: more than $187? between $147 and $227? between $167 and $207? more than $227
In 2009, the average charge for tax preparation by H&R Block, Inc. was $187. Assuming a normal distribution and a standard deviation of α= $20, what proportion of H&R Block’s tax preparation fees were: more than $187? between $147 and $227? between $167 and $207? more than $227
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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7.12 In 2009, the average charge for tax preparation by H&R Block, Inc. was $187. Assuming a
- more than $187?
- between $147 and $227?
- between $167 and $207?
- more than $227
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