Inferential Statistics

(g) Carry out a test of significance to decide whether Cal Poly students with back problems tend to carry more weight (higher ratios) than those without back problems.

1. Define the parameter(s) of interest.

2. State the hypotheses both in symbols and in words.

3. Identify an appropriate test procedure and state and if a theory-based approach comment on the validity conditions.

4. Use technology to find the test statistic and p-value for this procedure and these hypotheses. Include a 95% confidence interval for the parameter of interest.

Press one of the links below to view the appropriate technology instructions.

JMP Minitab R Applets

Copy the relevant output into your report.

5. State your decision and summarize your conclusions in context. Be sure to reference information from the computer output!

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