Casio ALGEBRA FX2.0 Advanced Statistics Examples 1 Instrukcja Użytkownika Pobierz pdf (Strona 21)

Example There are two possible routes to get to the airport from a certain

company, and so manager wants to determine which route is the

fastest in order to make a plane that leaves at 7 o'clock. One route was

researched five times and then the other route was researched five

times, producing the data shown below.

mean of x1 = 33.8min mean of x2 = 34.2min

n-1 = 16.4min x2

n-1 = 6.1min

Test the null hypothesis that the two routes have the same travel time

variance using the level of significance of 0.10.

Procedure

1 m STAT2

2 3(TEST) e( F)

3 2(VAR) c

1(≠) c

/jointfilesconvert/1751997/bg.ew

g.bw

1(None) c

4 1(CALC)

6(DRAW)

Result Screen

examples

Since P = 0.08144232 < 0.1 (level of significance), we can reject the null hypothesis and

conclude that two routes don’t have same travel time variance.

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Casio ALGEBRA FX2.0 Advanced Statistics Examples 1 Instrukcja Użytkownika Strona 21