The results of a hypothesis test are reported as follows in a scientific report: t(15) = 2.70, p < 0.05. Based on this report, how many individuals were in the sample?

A research study compares the mean weight for a sample of n = 36 participants before they begin a dieting routine diet to their mean weight six weeks later. This is an example of an independent-measures design.

Conceptually, the independent samples t test equation assesses the ratio of the actual difference between two sample means relative to how much difference should exist, on average, between two sample means when the null hypothesis is true.

What statement below is consistent with making a Type II error?

The alpha level determines the risk of a Type II error.

Two samples from the same population both have n = 10 scores with M = 45. If the t statistic is computed for each sample, then what is the relationship between the two t values?

A research study compares the mean weight for a sample of n = 36 participants before they begin a dieting routine diet to their mean weight six weeks later. This is an example of an independent-measures design.

Conceptually, the independent samples t test equation assesses the ratio of the actual difference between two sample means relative to how much difference should exist, on average, between two sample means when the null hypothesis is true.

If other factors are held constant, which set of sample characteristics is most likely to produce a statistically significant t statistic?

Two samples from the same population both have n = 10 scores with M = 45. If the t statistic is computed for each sample, then what is the relationship between the two t values?