The Home Electronics Supply Company claims that its home circuit breakers trip at levels that have less variation than circuit breakers made by its major competitor, which has variation described by σ = 0.4 amp.
Assume that a hypothesis test of the given claim will be conducted. Use µ for a claim about a mean, p for a claim about a proportion, and σ for a claim about variation.
a. Express the claim in everyday language.
b. Identify the null hypothesis H0.
c. Identify the alternative hypothesis H1.
d. Identify the test as being two-tailed, left-tailed, or right-tailed.
e. Identify the type I error for the test.
f. Identify the type II error for the test.
g. Assuming that the conclusion is to reject the null hypothesis, state the conclusion in
nontechnical terms; be sure to address the original claim.
h. Assuming that the conclusion is failure to reject the null hypothesis, state the conclusion
in nontechnical terms; be sure to address the original claim.