The diameters, d cm, of 60 cylindrical electronic components are represented in the following cumulative frequency graph.
Question:
The diameters, d cm, of 60 cylindrical electronic components are represented in the following cumulative frequency graph.
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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Related Book For 
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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