Question

Using two independent samples, two population means are compared to determine if a difference exists. The population standard deviations are equal. The number in the first sample is fifteen and the number in the second sample is 12. How many degrees of freedom are associated with the critical value

Answer 1

Answer:

Hence the degrees of freedom are associated with the critical value is 25.

Step-by-step explanation:

Using two independent samples, two population means are  

compared to determine if a difference exists, the population standard deviation is equal.  

sample size 1 = $n_{1}$= 15 and sample size 2 = $n_{2}$ = 12  

since, population standard deviations are equal, required degrees of freedom              

$= n_{1} + n_{2} - 2 \\= 15 + 12 - 2\\ = 25$