John Wiley & Sons TI-83 User Manual Page 77

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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.
A B C D
10 15 12 16
13 17 15 10
18 15 13 13
16 14 14 18
19 18 17 12
14 19
Solutions
1. The p-value is .779. Accept the null hypothesis. The population means are not significantly
different from each other.
77
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