t-Test
... Gosset the Brewer At Guinness, Gosset experimented with beer. • The Normal Model was not right, especially for small samples. • Still bell shaped, but details differed, depending on n • Came up with the “Student’s t Distribution” as the correct model ...
... Gosset the Brewer At Guinness, Gosset experimented with beer. • The Normal Model was not right, especially for small samples. • Still bell shaped, but details differed, depending on n • Came up with the “Student’s t Distribution” as the correct model ...
6-D - rlhawkmath
... the amount of wine put in a bottle was 0.23 ounces. With new equipment, the quality control manager believes the standard deviation has decreased. ...
... the amount of wine put in a bottle was 0.23 ounces. With new equipment, the quality control manager believes the standard deviation has decreased. ...
Measures of Location And Variability for Ungrouped or Raw Data
... 5. Since the data is a sample, divide the number (from step 4 above) by the number of observations minus one, i.e., n-1 (where n is equal to the number of observations in the data set). Later on, this term (n-1) will be called the degrees of freedom. ...
... 5. Since the data is a sample, divide the number (from step 4 above) by the number of observations minus one, i.e., n-1 (where n is equal to the number of observations in the data set). Later on, this term (n-1) will be called the degrees of freedom. ...
Confidence Interval
... o Appendix B.1, page 784 o (Student’s t distribution) o Appendix B.2, page 785 o Binomial Probability Distribution o Appendix B.9, pages 794,798 n x p( x) P( X x) p (1 p) n x x ...
... o Appendix B.1, page 784 o (Student’s t distribution) o Appendix B.2, page 785 o Binomial Probability Distribution o Appendix B.9, pages 794,798 n x p( x) P( X x) p (1 p) n x x ...
Notes 21
... • When several tests are considered simultaneously, they constitute a family of tests. • Individual Type I error rate: Probability for a single test that the null hypothesis will be rejected assuming that the null hypothesis is true. • Familywise Type I error rate: Probability for a family of test t ...
... • When several tests are considered simultaneously, they constitute a family of tests. • Individual Type I error rate: Probability for a single test that the null hypothesis will be rejected assuming that the null hypothesis is true. • Familywise Type I error rate: Probability for a family of test t ...
document
... A traffic engineer is concerned about the delays at an intersection near a local school. The intersection is equipped with a fully actuated (“demand”) traffic light and there have been complaints that traffic on the main street is subject to unacceptable delays. To develop a benchmark, the traffic e ...
... A traffic engineer is concerned about the delays at an intersection near a local school. The intersection is equipped with a fully actuated (“demand”) traffic light and there have been complaints that traffic on the main street is subject to unacceptable delays. To develop a benchmark, the traffic e ...
