Question 1
Formulate the null and alternative hypotheses for a hypothesis test.
A manufacturer wishes to test the claim that one of its pancake mixes has a mean weight that does not equal 16 ounces as advertised.
◦ H
0: μ = 16 ounces
H
a: μ > 16 ounces
◦ H
0: μ = 16 ounces
H
a: μ ≠ 16 ounces
◦ H
0: μ ≠ 16 ounces
H
a: μ = 16 ounces
◦ H
0: μ = 16 ounces
H
a: μ < 16 ounces
Question 2
Solve the problem.
An entomologist writes an article in a scientific journal which claims that fewer than 20 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
◦ There is not sufficient sample evidence to support the claim that the proportion is less than 20 in ten thousand.
◦ There is not sufficient sample evidence to support the claim that the proportion is greater than 20 in ten thousand.
◦ There is sufficient sample evidence to support the claim that the proportion is less than 20 in ten thousand.
◦ There is sufficient sample evidence to support the claim that the proportion is greater than 20 in ten thousand.
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Problem