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Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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10 Select the correct answer. A national restaurant chain claims that their servers make an average of $12.85 in tips per hour, with a standard deviation of $2.15. Given that the data is approximately normal, find the probability that a server, chosen at random, will make more than $8.65 in tips per hour. Table shows values to the LEFT of the z-score 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 1.6 0.94738 0.94845 0.94950 0.95053 0.95154 0.95254 0.95352 0.95449 1.7 0.95728 0.95818 0.95907 0.95994 0.96080 0.96164 0.96246 0.96327 1.8 0.96562 0.96638 0.96712 0.96784 0.96856 0.96926 0.96995 0.97062 0.97441 0.97500 0.97558 0.97257 0.97320 0.97831 0.97882 0.97932 0.97982 0.98030 0.98077 0.02169 0.02743 0.02680 1.9 0.97381 0.97615 0.97670 2.0 0.98124 0.98169 0.01876 -2.0 0.02118 0.02068 0.02018 02559 0.02500 0.02442 0.02385 0.02330 0.01970 0.01923 0.01831 -1.9 0.02619 -1.8 0.03438 0.03362 0.03288 0.04182 0.04093 0.04006 0.03920 0.03836 0.05155 0.05050 0.04947 0.04846 0.04746 0.04648 0.03216 0.03144 0.03074 0.03005 0.02938 -1.7 0.04272 0.03754 0.03673 -1.6 0.05262 0.04551 O A. 97.44% O B. 10.75% Oc. 89.25% O D. 2.56%
Transcribed Image Text:10 Select the correct answer. A national restaurant chain claims that their servers make an average of $12.85 in tips per hour, with a standard deviation of $2.15. Given that the data is approximately normal, find the probability that a server, chosen at random, will make more than $8.65 in tips per hour. Table shows values to the LEFT of the z-score 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 1.6 0.94738 0.94845 0.94950 0.95053 0.95154 0.95254 0.95352 0.95449 1.7 0.95728 0.95818 0.95907 0.95994 0.96080 0.96164 0.96246 0.96327 1.8 0.96562 0.96638 0.96712 0.96784 0.96856 0.96926 0.96995 0.97062 0.97441 0.97500 0.97558 0.97257 0.97320 0.97831 0.97882 0.97932 0.97982 0.98030 0.98077 0.02169 0.02743 0.02680 1.9 0.97381 0.97615 0.97670 2.0 0.98124 0.98169 0.01876 -2.0 0.02118 0.02068 0.02018 02559 0.02500 0.02442 0.02385 0.02330 0.01970 0.01923 0.01831 -1.9 0.02619 -1.8 0.03438 0.03362 0.03288 0.04182 0.04093 0.04006 0.03920 0.03836 0.05155 0.05050 0.04947 0.04846 0.04746 0.04648 0.03216 0.03144 0.03074 0.03005 0.02938 -1.7 0.04272 0.03754 0.03673 -1.6 0.05262 0.04551 O A. 97.44% O B. 10.75% Oc. 89.25% O D. 2.56%
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