The amounts spent, S dollars, by six customers at a hairdressing salon yesterday were as follows. 12.50,

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The amounts spent, S dollars, by six customers at a hairdressing salon yesterday were as follows.

12.50, 15.75, 41.30, 34.20, 10.80, 40.85.

Each of the customers paid with a $50 note and each received the correct change, which is denoted by $C.

a. Find, in dollars, the value of S̅ + C̅ and of S̅ − C̅.

b. Explain why the standard deviation of S and the standard deviation of C are identical.

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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Question Posted: Sep 13, 2021 01:56 AM

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The amounts spent, S dollars, by six customers at a hairdressing salon yesterday were as follows. 12.50,

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a The value of S C is 21305 The value of S C is 605 b The ...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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