Homework_3_4_KSS_06012016

# Homework_3_4_KSS_06012016 - STAT 500 Lessons 3 4 Minitab...

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STAT 500 Lessons 3, 4, & Minitab NAME: KYLE SHANK Answer the following questions showing all work. For the questions that require Minitab, include the appropriate output along with an explanation. Output without explanation will not receive full credit. Round all answers to 3 decimal places. If you have any questions, post them to the course discussion board. 1. Over the course of two weeks a restaurant kept track of the number of tables who order an appetizer. They found that 420 out of 1,400 tables during that time ordered an appetizer. Assume that event A = ordered an appetizer. [20 points] A. Compute P(A). P(A) = 420/1400 = 3/10 = 0.3 B. Compute the complement of P(A). P(A c ) = (1400-420)/1400 = 980/1400 = 7/10 = 0.7 C. Is this probability best described as a relative frequency probability or subjective probability? Explain why. This probability is best described as a relative frequency probability. It is not subjective in that we are not testing any prior held positions, beliefs, or assumptions on the probabilities of any given table ordering an appetizer – we are instead taking the empirical approach. D If you were to randomly select 3 tables, what is the probability that all three ordered an appetizer? P(3 tables ordering an appetizer) = (3/10) 3 = 27/1000 = 0.027 E. If you were to randomly select 3 tables, what is the probability that at least one ordered an appetizer? P( At least one appetizer) = 1 – P(No appetizers) 3 = 1 – (0.7) 3 = 657/1000 = 0.657 2. Trisomy 21, also known as Down syndrome, is a genetic condition characterized by a full or partial extra copy of chromosome 21. The Triple Blood Test screens

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