Question

Provided below are summary statistics for independent simple random samples from two populations. Preliminary data analyses indicate that the variable under consideration is normally distributed on each population. Decide whether use of the pooled​ t-test and pooled​ t-interval procedure is reasonable. x overbar 1equals461.8​, s 1equals46.4​, n 1equals9​, x overbar 2equals391.6​, s 2equals99.2​, n 2equals20 Is use of the pooled​ t-test and pooled​ t-interval procedure reasonable or not​ reasonable? Reasonable

Answer 1

Explained

Explanation:

Not reasonable, because it is not given or mentioned in the question that population standard deviation are equal. Although, use of the pooled t-test and pooled t-interval procedure is reasonable because the population follows normal distribution.