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MCQ: Hypothesis Testing

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Using the data below and a 0.1 significance level test the claim that this mean amount of tar in filtered cigarettes is less than the mean amount of tar in unfiltered cigarettes. Do not assume the population standard deviation are equal.

Filtered
15 17 17 12 16 3 17 17 9 14 12 13 14 15 14 15 15 16 10 15 11

Unfiltered

20 20 24 25 25 23 18 24

Is there sufficient enough evidence to support that the claim that the mean amount in tar in filtered cigarettes is less than the mean amount of tar in unfiltered cigarettes

Yes - null hypothesis is rejected
Yes, null hypothesis is not rejected
No, the null hypothesis is rejected
No, because the null hypothesis is not rejected.

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The solution provides answer to a multiple choice question on hypothesis Testing. Interactive excel sheet is included.

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