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lorasvet [3.4K]
2 years ago
15

If we consider the simple random sampling process as an experiment, the sample mean is a. a random variable. b. always zero. c.

exactly equal to the population mean. d. always smaller than the population mean.
Mathematics
1 answer:
marta [7]2 years ago
5 0

The sample mean is an estimate of the population mean.

The sample mean is exactly equal to the population mean

<h3>How to determine the true statement</h3>

When the population mean is known; the value of the population mean can be used as the sample mean.

This is so because:

The sample mean is an estimate of the population mean.

And it is represented as:

\bar x = \mu

Hence, the true statement is that the sample mean is exactly equal to the population mean

Read more about sample mean at:

brainly.com/question/12892403

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Answer:

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Step-by-step explanation:

The first step is to determine the constant that is needed to be able to write the expression in the desired form. That constant is the square of half the x-term coefficient: (18/2)^2 = 9^2 = 81.

The constant that is present is 76, which is 5 fewer than the needed constant, so the "first step" is to add 5 to both sides of the equation:

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Then the next step would be to write the left side as a square:

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The ratio of number of woman to the total number is 19 : 24.

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