The degrees of freedom (df) for a t statistic used to estimate the population mean with a sample size of n can be calculated as:a.df = n - 1b.df = nc.df = n + 1d.n+2

The degrees of freedom for a two-sample t-test is

In sample distribution, the degree of freedom is calculated as

The t value for a 95% confidence interval estimation with 24 degrees of freedom isQuestion 1Select one:a.2.112b.1.245c.2.000d.2.064

the square root of the original population mean.the original population mean divided by sample size.the same as the original population mean.the sample mean multiplied by variance. Repeating samples of the same sample size from population, the mean of the sample means will = to the oriigncal mean of the population of raw scores. Sample means is an unbiased estimator of the population mean Flag question: Question 16Question 161 ptsFor a t-test with one sample weGroup of answer choiceslose one degree of freedom because we have a samplelose one degree of freedom because otherwise our estimate of the population variance would be biasedlose two degrees of freedom because of the mean and the standard deviationhave N degrees of freedom Flag question: Question 17Question 171 ptsThe standard deviation of a sampling distribution is known as...Group of answer choicesthe standard error.the variance.error.the sampling deviation. Flag question: Question 18Question 181 ptsDividing the variance of the population by the number of subjects in each sample gives us…Group of answer choicesthe standard deviation of the population.the variance of the sampling distribution of means.an estimate of the sample's standard deviation.the average deviation of the distribution of means.

A sample of 20 is selected from the population. To determine the appropriate the critical t-value, what number of degrees of freedom should be used?Select one:A. 21B. InfinityC. 20D. 19