6. Suppose a tire manufacturer claims that their tires are good
for 40,000 miles. You wish to test their claim. A sample of 10
different cars using their tires shows an average lifetime of x¯ =
37,000 miles. What would be the form of your alternate
hypothesis.
A. H1 : µ < 37,000 B. H1 : µ > 37,000 C. H1 : µ < 40,000
D. H1 : µ > 40,000 E. other value
7. Suppose a candidate in a two-way race polls 1000 people and 470
of them say they are going to vote for him. He instructs you to
perform a one-sided significance test of the hypothesis that 50% of
the voters will vote for him. How sure can you be that he is going
to lose the election?
A. ≈ .0287 B. ≈ .0574 C. ≈ .9426 D. ≈ .9713 E. other value
6) You wish to test their claim. A sample of 10 different cars
using their tires shows an average lifetime of x¯ = 37,000 miles.
What would be the form of your alternate hypothesis.
A. H1 : µ < 37,000 B. H1 : µ > 37,000 C. H1 : µ < 40,000
D. H1 : µ > 40,000 E. other value
7. Suppose a candidate in a two-way race polls 1000 people and
470 of them say they are going to vote for him. He instructs you to
perform a one-sided significance test of the hypothesis that 50% of
the voters will vote for him. How sure can you be that he is going
to lose the election?
A. ≈ .0287 B. ≈ .0574 C. ≈ .9426 D. ≈ .9713 E.
other value
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