Suppose that a big study conducted similarly to our cell phone survey determined that the time to

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Suppose that a big study conducted similarly to our cell phone survey determined that the time to send our 25-word message was normally distributed with a mean of 31.6 seconds and a standard deviation of 11.4 seconds.

Under these assumptions, what is the probability that a randomly selected person would take more than 35 seconds to send the 25-word message?

At least how many seconds would you need to observe to conclude the time to send was unusually slow?

Related Book For answer-question

Essentials of Business Statistics Communicating With Numbers

ISBN: 978-0078020544

1st edition

Authors: Sanjiv Jaggia, Alison Kelly

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Posted Date: Mar 02, 2022 04:38 PM

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Suppose that a big study conducted similarly to our cell phone survey determined that the time to

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A for normal distribution z score Xx here mean 316 std deviation 11... View the full answer

Essentials of Business Statistics Communicating With Numbers

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