A shop has in its stock 80 rectangular celebrity posters. All of these posters have a width

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A shop has in its stock 80 rectangular celebrity posters. All of these posters have a width to height ratio of 1: √2, and their mean perimeter is 231.8cm.

Given that the sum of the squares of the widths is 200120cm², find the standard deviation of the widths of the posters.

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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 01:57 AM

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A shop has in its stock 80 rectangular celebrity posters. All of these posters have a width

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The standard deviation of the widths of the posters is approximately 6842 cm Explanation The width t...View the full answer

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

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