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26-03-2022
Mathematics

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Fred wants to determine the mean hourly wage of the working students at his
school. He asks thirty of his friends their hourly wages and calculates the sample
mean to be $8. Which of these statements MUST be true?
The sample was randomly selected.
Bias was present and the sample was not randomly selected.
The sample was representative of all students at the school
The mean hourly range of the working students at the school is $8.

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26-03-2022

Answer:

Last Option

Step-by-step explanation:

For this to be true, everyone who works at school must be getting a wage of 8$ so the hourly range of working students at the school IS 8$

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