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Author Question: Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies ... (Read 22 times)

krabuske

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Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the population of the running times is normally distributed.

150150180170


a.Compute the sample mean and the standard deviation.
b.State the null and alternative hypotheses.
c.Using the critical value approach, test the hypotheses at the 10% level of significance.
d.Using the p-value approach, test the hypotheses at the 10% level of significance.



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Marked as best answer by krabuske on Mar 25, 2023

bainer89

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krabuske

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Reply 2 on: Mar 25, 2023
YES! Correct, THANKS for helping me on my review


phuda

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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