Answer to Question #215095 in Statistics and Probability for mars

Question

cite five situation in your community where you can apply hypothesis testing then just choose one

Answer 1

Solution:

5 real-life examples of Hypothesis testing are:

(a):

Essential oils are becoming more and more popular. Chamomile, lavender, and ylang-ylang are commonly touted as anxiety remedies. Perhaps you'd like to test the healing powers of peppermint essential oil. Your hypothesis might go something like this:

1. Null hypothesis - Peppermint essential oil has no effect on the pangs of anxiety.
2. Alternative hypothesis - Peppermint essential oil alleviates the pangs of anxiety.

(b):

Is it true that vitamin C has the ability to cure or prevent the common cold? Or is it just a myth? There's nothing like an in-depth experiment to get to the bottom of it all. A potential hypothesis test could look something like this:

1. Null hypothesis - Children who take vitamin C are no less likely to become ill during flu season.
2. Alternative hypothesis - Children who take vitamin C are less likely to become ill during flu season.

(c):

Public Opinion About President Step 1. Determine the null and alternative hypotheses. Null hypothesis: There is no clear winning opinion on this issue; the proportions who would answer yes or no are each 0.50. Alternative hypothesis: Fewer than 0.50, or 50%, of the population would answer yes to this question. The majority do not think Clinton has the honesty and integrity to be president. 

(d):

Quitting Smoking with Nicotine Patches Compared the smoking cessation rates for smokers randomly assigned to use a nicotine patch versus a placebo patch. Null hypothesis: The proportion of smokers in the population who would quit smoking using a nicotine patch and a placebo patch are the same. Alternative hypothesis: The proportion of smokers in the population who would quit smoking using a nicotine patch is higher than the proportion who would quit using a placebo patch. 

(e):

Weight Loss for Diet vs Exercise The sample mean difference = 5.9 – 4.1 = 1.8 kg and the standard error of the difference is 0.83. Step 1. Determine the null and alternative hypotheses. Null hypothesis: No difference in average fat lost in population for two methods. Population mean difference is zero. Alternative hypothesis: There is a difference in average fat lost in population for two methods. Population mean difference is not zero.