FinalExam06

# FinalExam06 - SCHULICH SCHOOL OF BUSINESS YORK UNIVERSITY...

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OMIS1000 / OMIS2000 Statistics Fall 2006 Final Examination Page 1 of 11 Part I - Problem Recognition (24 marks, 3 marks each) Instructions: For each of the scenarios below, write the null and alternative hypotheses and indicate the most appropriate statistical test. You are not required to conduct the test, just choose the most suitable test from the following options: z test; t test; χ 2 test; F test, ANOVA. Notes : (1) Be specific in your answers: specify the type of ANOVA required (one-way, randomized block, or two-way), or whether you use the t-test for equal variances or not; (2) When writing hypotheses for two population tests use meaningful indexing. For example, if the question asks to compare Canada and the US, write μ c - μ u as opposed to μ 1 - μ 2 ; (3) Write all relevant hypotheses for each of the questions. 1. A ski company in Whistler owns two ski shops, one near Whistler and one near Blackcomb. The following data were collected from both stores: Whistler shop Blackcomb shop Mean sales \$328 \$435 Sample std. Dev. \$104 \$151 Sample size 35 days 30 days The company would like to test for a difference in daily average goggle sales between the two stores Hypotheses (H 0 and H A ): Test: 2. The state lottery office claims that the average household income of those people playing the lottery is greater than \$37,000. They also know that the distribution of these households’ income is normal with a standard deviation of \$5,756. To test their claim a sample of 25 households was
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## This note was uploaded on 09/25/2010 for the course OMIS OMIS 1000 taught by Professor Alexandershoumarov during the Fall '09 term at York University.

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FinalExam06 - SCHULICH SCHOOL OF BUSINESS YORK UNIVERSITY...

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