In Testing the Difference Between Two Population Means Using Two

question 11

Short Answer

In testing the difference between two population means using two independent samples, the population standard deviations are assumed to be known and the calculated test statistic equals 1.05. If the test is upper-tail and the 10% level of significance has been specified, the conclusion should be to: $\begin{array}{|l|l|}\hline A&\text {reject the null hypothesis. }\\\hline B&\text {not to reject the null hypothesis. }\\\hline C&\text { choose two other independent samples.}\\\hline D&\text {None of these choices are correct. }\\\hline\end{array}$

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Definitions:

Non-integer Number

A number that is not an integer, implying it can be a fraction, decimal, or irrational number.

Unequal-variances Test

Statistical tests used when comparing two groups that are assumed not to have the same variance.

Student T-distributed

Pertaining to a probability distribution used in statistics for estimating population parameters when the sample size is small and population variance is unknown.

Population Variances

Measures of the spread or distribution of a set of data points in a population, quantifying the degree to which these points differ from the population mean.