This preview shows page 1. Sign up to view the full content.
Unformatted text preview: .217 .021 2.262 10 = .1342 to .1762 b) What does the interval suggest about mileage differences for the two fuel types? They may be equal since 0 is in the interval. Since the interval is partly negative, it is also possible that the mileage with the discount gas is better. 3. TWOSAMPLE t . Let 1 = Nitrites, 2 = Control, Hypotheses: H o : 1 = 2 H a : 1 &lt; 2 Sample sizes are large enough that normality is not an issue. We also expect that the samples are chosen randomly. ( 29 2 2 7880 8112 1115 1250 30 30 t= + = .759 and p = .226 Conclusion: Since the pvalue is not very low, we fail to reject the null hypothesis. It does not appear that nitrites can significantly reduce the amount of bacteria in meat....
View
Full
Document
This note was uploaded on 05/01/2011 for the course AP CLASSES 101 taught by Professor Mr.smith during the Spring '11 term at Korea Advanced Institute of Science and Technology.
 Spring '11
 MR.Smith

Click to edit the document details