Interpret the measure of position as given in the information below. According to the study, the possibility of transmission of a COVID-19 carrier using a mask talking to a non-carrier without using a mask belongs to the 5th percentile. 40% of transmission happens before symptoms.

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Q: 1. Define expected value of the mean:

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A:                                                                  Introduction

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Q: doesn't the mean of a sample population equal the true proportion?

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