Key Points Hypothesis testing provides organizations with a structured approach to evaluate assumptions using data, reducing ...

The p-value depends on the sample size, the test statistic and the spread (usually standard deviation) of the samples. Let’s return to the example above. Our null hypothesis is: “The mean module mark ...

and the rejection region for a hypothesis test. Give the form of a rejection region. Perform tests concerning a true population variance. Compute the sampling distributions for the sample mean and ...

Confidence intervals and hypothesis tests are directly linked ... a p-value answers the question "How surprising is my sample?" The confidence interval can answer the question "What values of the ...

To access this Analyst sample data set, follow these steps ... To specify a box-and-whisker plot and a means plot in addition to the hypothesis test, follow these steps: ...