If we are testing for the difference between the means of two related populations with samples of n1 = 20 and n2 = 20, the number of degrees of freedom is equal to
A、39;
B、38;
C、19;
D、18
发布时间：2025-07-10 16:44:26
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：19
相关试题
- 1.If we are testing for the difference between the means of two related populations with samples of n1
- 2.In testing for differences between the means of two related populations, the null hypothesis is
- 3.In testing for differences between the means of two related populations, the null hypothesis states that
- 4.If two independent large samples are taken from two populations, the sampling distribution of the difference
- 5.In testing for differences between the means of two independent populations, the null hypothesis states
- 6.To compute an interval estimate for the difference between the means of two populations, the t distribution
- 7.When testing for a difference in two population means from small samples, a pooled variance must be computed
- 8.有以下程序段：int n1=10,n2=20;printf("( )",n1,n2);
- 9.Given the following information, calculate the degrees of freedom that should be used in the pooled-variance
- 10.When testing a hypothesis about the means for two independent populations (population standard deviations
