Suppose you want to know whether a training program that your company (an automo

Question

Suppose you want to know whether a training program that your company (an automobile manufacturer) has introduced recently in one of the plants has had any effect on worker mistakes. To test this, you decide to gather data for the plant that received the training and four other plants. The data you gather are monthly total number of mistakes made by workers during that month in each plant. Which of the following tests performed, given only this information? reports of the should be O At-test for the mean O A z-test for population proportion O A paired sample t-test for difference in means O An F-test for difference in variances O An F-test for difference in means O A z-test for the mean O A chi-squared test for variance O A z-test for difference in proportions O A z-test for the difference in means O An independent samples t-test for difference in means (equal variances) O An independent samples t-test for difference in means (unequal variances)

Explanation / Answer

Ans:

For above data,F test for difference in means will be conduct,to check if mean number of mistakes for plant for which plant is significantly different from others.

We will calculate first mean and standard deviation of number of mistakes for each plant for conduct F test,to check if there is significant difference in means between each plant.Then post hoc test will be done to check which plant is significantly different from others.

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