Exhibit 21-3 From a Population of Size 600, a Simple Random Sample

question 3

Multiple Choice

Exhibit 21-3
From a population of size 600, a simple random sample of size 58 is selected. The sample mean is 400, and the sample standard deviation is 40.
-Refer to Exhibit 21-3. An approximate 95% confidence interval for the population mean is

• A)395 to 405
• B)380 to 420
• C)360 to 440
• D)390 to 410

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