Chapter 8 HW #2 A drug company that produces drugs treating Menière\'s disease (

Question

Chapter 8 HW #2 A drug company that produces drugs treating Menière's disease (a disorder of the inner ear that may cause vertigo, imbalance, and nausea) has stated that Meniere's disease affects more than 25% of the population. To test this claim, a graduate student formulates the null hypothesis as: 0 The percentage of people with Meniere's disease is less than or equal to 25%. O The percentage of people with Meniere's disease is greater than 25%. O The percentage of people with Ménière's disease is less than 25%. e) The percentage of people with Meniere's disease is equal to 25%. The graduate student formulates the alternative hypothesis as: The percentage of people with Meniere's disease is greater than 25%. The percentage of people with Meniere's disease is greater than or equal to 25%. O The percentage of people with Meniere's disease is less than 25%. O The percentage of people with Meniere's disease is less than or equal to 25%. The graduate student commits a Type I error if she concludes that: The percentage of people with Meniere's disease is greater than 25%, when the percentage is actually less than or equal to 25%. O There is not enough evidence to infer that the percentage of people with Ménière's disease is greater than 25%, when it actually is greater. The graduate student commits a Type II error if she concludes that: There is not enough evidence to infer that the percentage of people with Ménière's disease is greater than 25%, when it actually is greater. The percentage of people with Meniere's disease is greater than 25%, when the percentage is actually less than or equal to 25%

Explanation / Answer

For the first question the answer will be option 4.

For the alternative hypothesis, the answer is option 1, since we wish to know whether the the percentage of people affectd is more than 25% or not.

For the third question the answer is option 1 as the type 1 error is the event of rejecting the true null.

The answer to the 4th question is option 1 as type 2 error is defined as the event of accepting the false null.

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