Beata Chmielewska

Which one of the following test is used to compare five means, simultaneously? Run test Normally test One way ANOVA 2 Sample T Test F-Test

Which test determines if there is a difference between the mean of a group and proposed standard value? Paired t-test F-test One Sample t-test One way ANOVA Two sample t-test

The null hypothesis is: a. Always contains a > in the equation b. Not needed c. The alternative hypothesis d. The hypothesis of no difference e. Always contain a < in the equation

Which of the following statements correctly interprets a 95% confidence interval on a population mean? a. It is a single point estimate b. Used to quantify the certainty of the sample standard deviation c. A 99% confidence interval is narrower than the 95...

An individual is reviewing a stable, normal process that has a Cq=3 and a Cpk =5. In order to achieve a capable process, what must be done? a. shift mean only b. reduce variation only c. reduce variation and shift the mean d. it already capable process e....

What statistical assumptions need to be validated for ANOVA results to be valid? a. observations are from an F-distribution b. Observations are from a Chi square distribution c. Observations are normally distributes, independent, a variances are equal d....

When population data are discrete and you want to compare two populations, which test is most appropriate? a. T-test b. Anderson Darling c. Leven’s d. 2-Proprotion test e. F-test

Which testing a statistical hypothesis with significance level of alpha 0.05, when do you reject the NULL hypothesis (HO)?