Question

Banking | Retail | Insurance |

12 | 8 | 10 |

10 | 8 | 8 |

10 | 6 | 6 |

12 | 8 | 8 |

10 | 10 | 10 |

Step 1

**1.**

The null and alternative hypotheses can be written as follows.

Step 2

**Decision rule:**

If the *F-statistic *value is greater than *F-critical *value, then reject the null hypothesis. Otherwise do not reject the null hypothesis.

**3.**

The comparison of three means (ANOVA) is conducted by using EXCEL. The software procedure is given below:

- Enter the data as
**Banking**in column A,**Retail**in column B, and**Insurance**in column C. - Select
**Data > Data analysis > Anova: Single factor > OK...**

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