A professor has a teaching assistant record the amount of time (in minutes) that a sample of 16 students engaged in an active discussion. The assistant observed 8 students in a class who used a slide show presentation and 8 students in a class who did not use a slide show presentation.

Use the normal approximation for the Mass-Whitney U test to analyze the data above. (Round your answer to two decimal places.)

z = -1.83

State whether to retain or reject the null hypothesis. (Assume alpha equal to 0.05.)

Transcribed Image Text:

With Microsoft PowerPoint 8 7 13 9 5 18 4 12 Without Microsoft PowerPoint 14 19 23 21 10 6 15 11 Retain the null hypothesis. O Reject the null hypothesis. With Microsoft PowerPoint 8 7 13 9 5 18 4 12 Without Microsoft PowerPoint 14 19 23 21 10 6 15 11 Retain the null hypothesis. O Reject the null hypothesis.

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