Test the hypothesis that calls by surgical–medical patients are independent of whether the patients are receiving Medicare. Question 36: Grades in a statistics course and an Operation Research course taken simultaneously were as follows for a group of students. Statistics Grade| Operation Research Grade| | A| B| C| Other| A| 25| 6| 17| 13| B| 17| 16| 15| 6| C| 18| 4| 18| 10| Other| 10| 8| 11| 20| Are the grade in Statistics and Operation Research related? Question 37: An experiment with artillery shells yields the following data on the characteristics of lateral deflections and ranges.
Would you conclude that deflection and range are independent? Range (yards)| Lateral deflection| | Left| Normal| Right| 0-1999| 6| 14| 8| 2000-5999| 9| 11| 4| 6000-11999| 8| 17| 6| Question 38: A study is being made of the failures of an electronic component. There are four types of failures possible and two mounting position for the device . The following data have been taken: Mounting position| Failure type| | A| B| C| D| 1| 22| 46| 18| 9| 2| 4| 17| 6| 12| Would you conclude that the type of failure is independent of the mounting position?
Question 39: A random sample of students are asked their opinions on a proposed core curriculum change. The results are presented here: Class| Opinion| | Favoring| Opposing| Freshman| 120| 80| Sophomore| 70| 130| Junior| 60| 70| Senior| 40| 60| Test the hypothesis that the opinions are independent of the class groupings. Question 40: Fabric is graded into three classifications: A, B and C. The results below were obtained from five looms. Is the fabric classification independent of the loom? Loom| Number of pieces of Fabric in Fabric Classification| | A| B| C| 1| 185| 16| 12| | 190| 24| 21| 3| 170| 35| 16| 4| 158| 22| 7| 5| 185| 22| 15| Question 41: An article in the journal of Marketing Research reports a study of the relationship between facility conditions at gasoline stations and the aggressiveness of their gasoline marketing policy. A sample of 441 gasoline stations were investigated with the results shown below obtained. Is there evidence that gasoline pricing strategy and facility conditions are independent? Policy| Condition| | Substandard| Standard| Modern| Aggressive| 24| 52| 58| Neutral| 15| 73| 86| nonaggressive| 17| 80| 36|
Problem Statement This study will explore the short term and long-term health effects of railroad personnel working on locomotive not equipped with air conditioners during the summer months. An attempt will be made to tie the temperature on these locomotives to various heat related illnesses that people become exposed to after working in unusually hot conditions. This researcher intends on ...