Question

ch 16 the purpose of a confidence interval for the population mean, μ, is to give a range of likely values for the: sample mean. difference between the sample mean and the population mean. unknown population mean. level of confidence.

Explanation:

A confidence - interval for the population mean $\mu$ is constructed to estimate the unknown value of the population mean. It gives a range of values within which the true population mean is likely to lie. The sample mean is used to calculate the confidence interval, but the interval is for the population mean, not the sample mean. The difference between the sample mean and population mean is not what the confidence interval represents directly. The level of confidence is a probability associated with the method of constructing the interval, not what the interval values are for.

Answer:

C. unknown population mean