The diameters, d cm, of 60 cylindrical electronic components are represented in the following cumulative frequency graph.

Question:

a. Find the number of components such that 0.2 ≤ d < 0.4, and explain why your answer is not an estimate.

b. Estimate the number of components that have:

i. A diameter of less than 0.15cm

ii. A radius of 0.16cm or more.

c. Estimate the value of k, given that 20% of the components have diameters of kmm or more.

d. Give the reason why 0.1–0.2cm is the modal class.

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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 10, 2021 02:07 AM

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The diameters, d cm, of 60 cylindrical electronic components are represented in the following cumulative frequency graph.

Question:

60 - 20 0.1 0.2 0.3 0.4 0.5 0.6 Diameter (d cn.) Cumulative frequency (No. components) dge

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

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