Texas Instruments TI-83 Plus Manual page 77

Exercises
1. Test at a 5% significance level whether or not these samples come from populations with
identical means. Assume that the populations are all normally distributed with identical
standard deviations.
Solutions
1. The p-value is .779. Accept the null hypothesis. The population means are not significantly
different from each other.
A B C
10 15 12
13 17 15
18 15 13
16 14 14
19 18 17
14 19
77
D
16
10
13
18
12