Ch 9 Steps in hypothesis testing.docx

# Ch 9 Steps in hypothesis testing.docx - Ch 9 Steps in...

• 4

This preview shows 1 out of 3 pages.

Ch 9 Steps in hypothesis testing Step 1: State the hypothesis to be tested. Step 2: Specify what level of inconsistency with the data will lead to rejection of the hypothesis. This is called a decision rule. Step 3: Collect data and calculate necessary statistics to test the hypothesis. Step 4: Make a decision. Should the hypothesis be rejected or not? Step 5: Take action based on the decision. One-Tailed and Two-Tailed Tests For a mean, the null hypothesis H 0 states the value(s) of μ 0 that we will try to reject. There are three possible alternative hypotheses: Left-Tailed Test Two-Tailed Test Right-Tailed Test H 0 : μ μ 0 H 0 : μ = μ 0 H 0 : μ μ 0 H 1 : μ < μ 0 H 1 : μ μ 0 H 1 : μ > μ 0 , if test statistic a is known If it is not known. For a proportion:

Subscribe to view the full document.

Example problems: Sample size determination for a mean 8.8 A produce manager wants to estimate the mean weight of Spanish onions being delivered by a supplier, with 95 percent confidence and an error of ± 1 ounce. A preliminary sample of 12 onions shows a sample standard deviation of 3.60 ounces. For a 95 percent confidence interval, we will set
You've reached the end of this preview.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern