3. A group of 52 randomly selected students
have a mean average score of ๐ฅฬ
= 20.2 with a standard deviation of
๐ = 4.6 on a placement test. What is the 90 percent confidence
interval (CI) and margin of error (ME) for the population mean
score, ๐, of all students taking the test? Interpret your
results.
3. A group of 52 randomly selected students have a mean average score of 𝑥ฬ = 20.2 with a standard deviation of
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3. A group of 52 randomly selected students have a mean average score of 𝑥ฬ = 20.2 with a standard deviation of
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