The daily journey times for 80 bank staff to get to work are given in the following

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The daily journey times for 80 bank staff to get to work are given in the following table.

a. How many staff take between 15 and 45 minutes to get to work?

b. Find the exact number of staff who take x+ y/2 minutes or more to get to work, given that 85% of the staff take less than x minutes and that 70% of the staff take y minutes or more.

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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 daily journey times for 80 bank staff to get to work are given in the following

Question:

Time (t mira t<10 t<15 t< 20 t<25 t< 30 amb 11 t< 45 t< 60 24 56 68 76 80

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a The number of staff who take between 15 and 45 minutes to get to work is the sum of the number of ...View the full answer

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

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