Question

Which variables are used to calculate the t-value?

1) Mean, variance, sample size.
2) Mean and variance.
3) Normal distribution, mean, standard deviation.
4) Mean, sample size, coefficient of determination.

Answer 1

The t-value in hypothesis testing of a single population mean is calculated using the mean, variance, and sample size.

Step-by-step explanation:

The variables used to calculate the t-value in hypothesis testing of a single population mean are:

1. Mean: the average value of the sample
2. Variance: the measure of how spread out the data is around the mean
3. Sample size: the number of observations in the sample

These three variables are necessary to calculate the t-value, which is used to determine the statistical significance of the difference between the sample mean and the population mean.