Lecture 32 - 211 Fall 2009

Example experiment your random sample of experiment

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . Rejection Non- 4. Hypothesis tests - σX known. Hypothesis Hypothesis Test Start to Finish. Example: Experiment – your random sample of Experiment textbook costs (n = 16). Assume we know that σX = $146.64. Let’s test a true null hypothesis. true 1) Hypothesis – Null and Alternative. 2) Choose α = 0.10 3) Critical Value(s): Standardized Standardized Test: Turn the sampling distribution into a z. 3 4) Estimate: Calculate your sample mean, sample standard deviation, and test statistic: zcalc = σX X − μ0 n PRS 2: Calculate your z-score for this test. your Round to 2 decimal places – report that value. decimal 5) 5) Compare: Where does your test statistic fall? zcalc vs. zα/2 6) Conclusion: Example: Example: Hypothesis Test Start to Finish. Cell Cell phone drivers – are they impaired? impaired Compare Compare – cell phone drive to a “baseline driver” and an “intoxicated driver.” Data Data collection: controlled experiment of 40 men and women using driving simulator men and women using a driving simulator. Results: Resu...
View Full Document

Ask a homework question - tutors are online