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Chi-Square - Absenteeism among assembly workers is of concern

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1. Absenteeism among assembly workers is of concern. In particular, there may be a relationship between the day of the week on which absence occurs and the type of job performed by the worker. Workers are classified as skilled, semiskilled and laborer. A random sample of days absent was selected from records kept over the past several years; workers were never included more than once on the following results:

Days Absent Among Assembly Line Workers
Type of Workers
Days Skilled Semiskilled Laborer
Monday 18 23 21
Tuesday 10 16 17
Wednesday 12 11 9
Thursday 17 16 16
Friday 22 26 20

Use an alpha of 0.05

Are days and type of workers independent?

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The solution uses a chi-square test to determine if the absenteeism among assembly workers is a concern.

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1. Absenteeism among assembly workers is of concern. In particular, there may be a relationship between the day of the week on which absence occurs and the type of job performed by the worker. Workers are classified as skilled, semiskilled and laborer. A random sample of days absent was selected from records kept over the past several years; workers were never included more than once on the following results:

Days Absent Among Assembly Line Workers
Type of ...

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