The random variable X is such that X ~N(82, 126). i. A value of X is chosen

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The random variable X is such that X ~N(82, 126).

i. A value of X is chosen at random and rounded to the nearest whole number. Find the probability that this whole number is 84.

ii. Five independent observations of X are taken. Find the probability that at most one of them is greater than 87.

iii. Find the value of k such that P(87 < X < k) = 0.3.

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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 14, 2021 02:11 AM

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The random variable X is such that X ~N(82, 126). i. A value of X is chosen

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i To find the probability that the whole number rounded from a random value of X is 84 we need to fi...View the full answer

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

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