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Elena-2011 [213]
3 years ago
11

A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obta

ined (12 18 19 20 21). A point estimate of the mean is?
Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:  18

Step-by-step explanation:

  • The<u> sample mean</u> is the best point estimate of the population mean .

Given : A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained (12 18 19 20 21).

Then , the sample mean = \dfrac{\text{Sum of observations}}{\text{Number of observations}}

sample mean =\dfrac{12 +18 +19+ 20+ 21}{5}=18

Hence, A point estimate of the mean is 18.

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