Question

Asked Nov 17, 2019

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Are age and obesity independent? Preform a chi-squared test of independence. Document the 5 steps used in hypothesis testing.

Age | Obese | Not Obese | Total |

<50 | 100 | 500 | 600 |

50+ | 200 | 200 | 400 |

Total | 300 | 700 | 1,000 |

Step 1

The test statistic is given below:

Step 2

The null and alternative hypotheses are stated below:

Null hypothesis: The age and obesity are not independent.

Alternative hypothesis: The age and obesity are independent.

Step 3

The Expected frequency each observation can be obtained as follows:

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