In testing the difference between two population means based on independent,small random samples from two normally distributed populations with unknown variances,the most appropriate test statistic is based on the _________ distribution.
A)z
B)t
C)F
D)chi-square
E)exponential

Question

Quizplus · Accepted Answer

When dealing with small samples and unknown variances, the most appropriate test statistic is based on the t-distribution. The t-test allows for different sample sizes and takes into account the variability within the samples. The other options (z, F, chi-square, exponential) are not appropriate for this scenario. The z-test requires known population variances, the F-test is used for comparing variances in two populations, the chi-square test is used for testing categorical data, and exponential distribution would not be appropriate for this scenario.

In Testing the Difference Between Two Population Means Based on Independent,small