Mathematics, 19.04.2021 17:50 dondre54

Lamar collected a random sample of data about the number of letters in the full names of seventh graders at his school. His sample mean was 10.2
10.2. Lamar's teacher told him that the population mean is
12.4
12.4. Lamar thinks he did something wrong because his sample mean is not the same as the population mean.

Should Lamar be concerned?

Pls help

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