# Thread: Hypothesis testing with significance level

1. ## Hypothesis testing with significance level

Unsure how to start part B, cant find any examples in my textbook.

A study examined a random sample of smokers who tried to quit smoking by using either the patch or e-cigarettes in 2012. Here is a quote from a news article referencing the study: “Quitting is hard. The number of people who quit (within 6 months) was low overall—just 38 of the 584 smokers given the e-cigarette or the patch.”

B) In 2010, it was reported that the proportion of smokers who quit smoking by using either the patch or e-cigarettes within 6 months in the population was 5%. Using the current data in 2012, test the claim that the proportion of smokers who quit smoking by using either the patch or e-cigarettes in the population has declined since 2010. Use all steps for hypothesis testing to make a conclusion at a significance level of 10%.

2. ## Re: Hypothesis testing with significance level

Okay, what do you know about this? The problem says "use all steps for hypothesis testing" which implies that you have been given "steps" to follow. What are those "steps"?

3. ## Re: Hypothesis testing with significance level

One sample z -test of percents. h0: proportion of smokers hasn't declined/hasn't changed, h1: the proportion has declined. One tailed test since the task is to test if smoking has declined.