BUS 223 Lecture Notes - Lecture 1: Test Statistic, Standard Deviation, Null Hypothesis
25 Jun 2018
School
Department
Course
Professor
HYPOTHESIS TESTING
WORD LIST
1. Null Hypothesis
2. Alternative Hypothesis
3. Level of Significance
4. Critical Region
5. Critical Value
6. Alpha Level
7. Fail to reject Region
8. Reject Region
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Word list: null hypothesis, alternative hypothesis, level of significance, critical region, critical value, alpha level, fail to reject region, reject region. Sample questions: the population has an assumed mean of 500 and a standard deviation of 35. A sample of 35 items had a mean of 483. Sixty-four new light bulbs are tested by a consumers group and it was found that they lasted an average of 975 hours. A random sample of 36 accounts found that the average balance in the accounts to be . After a new sorting system was introduced, a random sample of 41 days" routings is taken. It is found that there were an average of 17. 83 misroutings on these days. Using a 5% level of significance, should we accept management"s claim that the number of misroutings has decreased: the average score of all sixth graders on a math aptitude test was 75 with a standard deviation of 8. 1.
