Survey analysis In a survey of the dining preferences of 110 dormitory students at the end of the spring semester, the following facts were discovered about Adam’s Lunch (AL), Pizza Tower (PT), and the Dining Hall (DH). 27 liked AL but not PT 13 liked AL only 43 liked AL 41 liked PT 59 liked DH 4 liked PT and AL but not DH 13 liked PT and DH How many liked PT or DH?

Survey analysis In a survey of the dining preferences of 110 dormitory students at the end of the spring semester, the following facts were discovered about Adam’s Lunch (AL), Pizza Tower (PT), and the Dining Hall (DH). 27 liked AL but not PT 13 liked AL only 43 liked AL 41 liked PT 59 liked DH 4 liked PT and AL but not DH 13 liked PT and DH How many liked PT or DH?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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20 high school Spanish teachers attended an summer course to improve their listening skills. They took the MLA listening test both before and after the course. Before the course they had a mean of 27.3 with s=8.04. After the course they had a mean of 28.75 with s=2.74. We want to know if the course improves scores. A.) State an appropriate Ho and Ha. B.) Carry out a test. Can you reject at the 5% significance level? at the 1% level?
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2) You want to find out if there is a food preference in between two species of bats. You collect the following data. You suspect species B prefers Beetles: Bat species A Bat species B Moths 23 9 Beetles 21 33 Do both species of bat have the same food preferences? Make sure you clearly state Ho, H₁, etc. Use a = 0.05. Also clearly write out your decision and what it means.
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