The​ frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Option C.

Explanation:

In this type of statistical problems you usually want to find the value of a certain parameter. In this case, the parameter is the average of the voltage of the whole year.

Many times it is difficult to record the values for the entire population (record the voltage every day), and that is why you usually take a sample of the population (some of the days) and find the average voltage based on it to estimate the parameter.

This value that estimates the parameter is called statistic, therefore the correct option is C.

5 but its probaly not right bc im just looking for pointsStep-by-step explanation:

And for this case the sample mean is

And this value is calculated from a sample so then can't represent a population parameter. Then the value 127.1 represent a statistic called the sample mean unbiased for the true population mean since , and the best option would be:

D) The given value is a statistic for the year because the data collected represent a sample.

Step-by-step explanation:

For this case we know that a homeowner take a random sample of 42 voltage values ina year and he calculate the sample mean with this formula:

And for this case the sample mean is

And this value is calculated from a sample so then can't represent a population parameter. Then the value 127.1 represent a statistic called the sample mean unbiased for the true population mean since , and the best option would be:

D) The given value is a statistic for the year because the data collected represent a sample.

C. The given value is a statistic for the yearyear because the data collected represent a samplesample.

Explanation:

A parameter is a numerical measurement of a population while a statistic is a numerical measurement of a sample. Statistics use assumptions to represent relations among variables and parameters should meet requirements and present more objective data. In this case, the voltage value found is the mean of a 34 days sample and, therefore, the given value is a statistic of the daily voltage for the year.

C. The given value is a statistic statistic for the year year because the data collected represent a sample sample.

Correct. The value reported is an statistic since represent a SAMPLE of the population of interest.

Step-by-step explanation:

The sample mean obtained was :

A. The given value is a parameter parameter for the year year because the data collected represent a population population.

False. The data colected represent a sample of the population of interest, so for this case is not a parameter because we don't have the information about all the population of interest.

B. The given value is a parameter parameter for the year year because the data collected represent a sample sample.

False. First the sample average is not a parameter, and second the population mean is not equal to the sample mean most of the times.

C. The given value is a statistic statistic for the year year because the data collected represent a sample sample.

Correct. The value reported is an statistic since represent a SAMPLE of the population of interest.

D. The given value is a statistic statistic for the year year because the data collected represent a population.

False. If is an statistic can't represent the population, since the parameter represent the population not the statistic.