Question

Consider the following competing hypotheses and accompanying sample data drawn independently from normally distributed populations. (You...

Consider the following competing hypotheses and accompanying sample data drawn independently from normally distributed populations. (You may find it useful to reference the appropriate table: z table or t table)

H0: μ1μ2 ≥ 0
HA: μ1μ2 < 0

x−1x−1 = 232 x−2x−2 = 259
s1 = 30 s2 = 20
n1 = 6 n2 = 6


a-1. Calculate the value of the test statistic under the assumption that the population variances are equal. (Negative values should be indicated by a minus sign. Round all intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.)

b-1. Calculate the value of the test statistic under the assumption that the population variances are unknown and are not equal. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.)

Homework Answers

Answer #1

The statistical software output for this problem is :
(a-1)


Test statistics = -1.834

(b-1)


Test statistics = -1.834

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