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phone or internet
phone or internet
06/07/07 at 09:24 AM by nsgob22
Noah Seidel
Jason MacDonald
6/7/07

We are investigating whether Newport High School students spend more time talking to friends on the phone (including text messaging) or on the internet?

Ud= Uphone- Uinternet

Ho: Ud= 0
Ha: Ud=0

We randomly selected two teachers from Newport and interviewed their class of students.
We gave every teacher at Newport a number then using the random integer function we selected our teachers.

TABLE AND GRAPH!!

Five number summary:
-80, -12.5, 0, 12.5, 50

Matched t- test

1) SRS- no, stratified random sample, proceed with caution
2) Population >10n yes 10(38)= 380 all Newport students is greater then 380. (1554>380)
3) N>40 yes 44>40


DO THE MATH JASON ,& change the U to the mean symbol if you can


p- value = 2p(t>0.345)= 0.73

With a p value of 0.73 we fail to reject the null hypothesis, and conclude that the mean time Newport students spend on the internet and phone each day are the same.
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