Okay, I'm really horrid at anything remotely related to math, and I'm having serious issues with my webassign. Any help is VERY much appreciated.

4.A study is conducted to see how effective aspirin is in reducing temperature in children. A sample of 8 children suffering from influenza had their temperatures taken immediately before and 1 hour after administration of aspirin. The results are given below. We would like to conduct a paired differences t-test for this situation. The data follow.
Patient Temperature Before Temperature After
1 101.2 99
2 101.0 99.7
3 101.6 102.2
4 102.2 99.4
5 100.7 99.5
6 103.6 104.1
7 100.8 99.3
8 100.5 99.8

Calculate the sample mean difference for these data. (When calculating differences, subtract the before temperature from the after temperature (after-before).)

Calculate the sample standard deviation of the differences.

Calculate the appropriate test statistic for a matched pairs t-test for these data.

^I sort of bumbled my way through this problem, but am pretty sure it's wrong.

5.A forestry researcher wants to estimate the average height of trees in a forest near Atlanta, Georgia. She takes a random sample of 20 trees from this forest. From this sample she found that the average height was 4.6 meters with a standard deviation of 0.45 meters. Assume that the distribution of the heights of these trees are not strongly skewed and do not have any outliers.
Calculate a 99% confidence interval for the average height of all trees in this forest.
Lower bound:
Upper bound:

For this one I have no freaking clue.

11/11/2005 1:07:45 PM

nvm TI-83 took care of it

11/11/2005 10:08:12 PM

if you need to ask for help with st311 drop out now

11/11/2005 10:45:59 PM

TI-83 Plus + Owners Manual = A+ in Statistics



But it's pretty easy to get an A anyways.

11/11/2005 10:52:09 PM

Do you not have a fucking book in that class? Do you not go to class at all? That's the most basic shit.

11/12/2005 9:44:17 AM