# Question

Consider the following competing hypotheses and accompanying sample data.

H0: - ≥ 0

HA: - < 0

x1 = 250 x2 = 275

n1 = 400 n2 = 400

a. At the 5% significance level, find the critical value(s).

b. Calculate the value of the test statistic.

c. What is the conclusion to the test? Is significantly less than ?

H0: - ≥ 0

HA: - < 0

x1 = 250 x2 = 275

n1 = 400 n2 = 400

a. At the 5% significance level, find the critical value(s).

b. Calculate the value of the test statistic.

c. What is the conclusion to the test? Is significantly less than ?

## Answer to relevant Questions

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