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There is a concern among women smokers that their BMI (assumed to be Normally di

ID: 3217919 • Letter: T

Question

There is a concern among women smokers that their BMI (assumed to be Normally distributed) will increase if they stop smoking. A random sample was taken of 21 women who were about to stop smoking. Their baseline BMI was recorded and their 6-year post-smoking cessation BMI was recorded. We want to know if they experienced a significant increase in BMI. What is the hypothesis? Please explain, thank you!

What is the hypothesis? Ho HD20, H1: UD 0, where u Ho uD- 0, H1: HD 0, where D Hoost HDoselne Ho s 0, H1: HD 0, where uo Wpast ubaseine

Explanation / Answer

Null hypothesis which we want to reject would be that there would be no difference in the BMI. This is how the theory of hypothesis testing works.

Hence, the correct answer is C.

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