Test the clаim аbоut the pоpulаtiоn mean, μ, at the level of significance, α. Assume the population is normally distributed. (This is a multi-part problem. You will be working with this dataset for Problems 19, 20, 21, and 22.) Claim: μ < 13.9 α = 0.05 Sample statistics: x̅ = 13, s = 1.3, n = 10 Identify the correct standardized test statistic based on the problem above.