On the Data tab of the 1-Sample t dialog box, specify the data and the null hypothesis for your analysis.

Select the option that best describes your data.

Complete the following steps if your data are in a column of the worksheet.

- From the drop-down list, select Sample data in a column.
- In Sample, enter the column of numeric data that you want to analyze.

In this worksheet, Cost contains the maintenance costs of a random sample of machines.

C1 |
---|

Cost |

43 |

55 |

34 |

87 |

Complete the following steps if you have summary statistics for the sample, rather than actual sample data in the worksheet.

- From the drop-down list, select Summarized data.
- Enter the summary statistics in Sample size, Sample mean, and Sample standard deviation.

Complete the following steps to perform a hypothesis test and to specify a hypothesized value. For more information, go to What is a hypothesis test?

- Select Perform hypothesis test to determine whether the population mean (denoted as μ,) differs significantly from the hypothesized value (denoted as μ
_{0}) that you specify. If you don't perform the test, Minitab still displays a confidence interval, which is a range of values that is likely to include the population mean. - Enter a value in Hypothesized mean. The Hypothesized mean defines your null hypothesis (H
_{0}: μ = μ_{0}). Think of this value as a target value or a reference value. For example, an engineer enters 3 to determine whether the mean width of electrical wire is different from 3 mm (H_{0}: μ = 3).