Quiz 8 in Math 243: Probability and Hypothesis Testing - Prof. T. Brand, Quizzes of Probability and Statistics

Download Quiz 8 in Math 243: Probability and Hypothesis Testing - Prof. T. Brand and more Quizzes Probability and Statistics in PDF only on Docsity! Quiz 8 Name Math 243 GTF May 29, 2009 Disc. Time For all of the problems below, each blank must be filled in correctly for full credit. In addition, you must give the relevant formulas and show intermediate steps to receive full credit, even if you use a calculator to do your work. 1. In North America 6% of the population is red-green colorblind. We take a simple random sam- ple of 703 people in North America and test them for colorblindness. What is the probability that between 7% and 8% of people in the sample are red-green colorblind? P -value: 2. You suspect that Greenacre brand seeds are more likely to sprout than Evergrow brand seeds are. You plant 20 seeds of each brand and find that 14 of the Greenacre seeds have sprouted, but only 11 of the Evergrow seeds have. Based on these results, do you have convincing evidence at significance α = 0.10 that Greenacre seeds are in fact more likely to sprout than Evergrow seeds? Hypotheses: Test statistic: P -value (or range of values for P ): Conclusion: