2013 - STA1000S Handin tutorial week 10 answers

C reject 22 the population mean tested

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ̅ c) ( ̅ ) √ √ ( ) √ √ ( ) Reject , 2.2 (the population mean tested for) falls outside the confidence interval, suggesting that the population means of the two different groups are significantly different. This result is consistent with what was found in (a). 4. a) Test statistic: ̅ √ √ p-value (one-sided) At a 1% level of significance, fail to reject ( ), conclude that the new method does not significantly reduce the mean number of sulphur parts per million. At a 5% level of significance, reject ( ), conclude that the new method does significantly reduce the mean number of...
View Full Document

Ask a homework question - tutors are online