STAT 2000 Study Guide - Winter 2018, Comprehensive Midterm Notes - Winnipeg, The Weight, Statistical Hypothesis Testing

• School: University of Manitoba
• Department: Statistics
• Course: STAT 2000
• Professor: Andrew Morris

Document Summary

Many drivers buy premium gasoline in the belief that they will get better gas mileage rather than regular gasoline. To test this belief, a sample of 8 cars is taken. Each car is run for one tank on regular gas and one tank on premium gas, with the order randomly determined. The mileage (in miles per gallon) is measured for each car for each type of gasoline: slide u2 38. A sample of three women and four men is taken to measure their heights. Suppose we know that heights x1 of women follow a normal distribution with mean 165 cm and std. dev. 4 cm, and that heights x2 of men follow a normal dis. with mean 178 cm and std. dev. What is the probability that the mean height of women is greater than the mean height of the men in the sample: unit 2 44.