Hypothesis Testing for the mean. Note: Be sure to include a verbal conclusion of your work. (Use the 1-prop Z-test 6) A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. Using a 5% significance level test the claim. 7) An airline claims that the no-show rate for passengers is less than 5%. In a sample of 420 randomly selected reservations, 19 were no-shows. Using a 1% significance level test the airline's claim. ɔle 8) Claim: Fifty-five percent of registered voters in a congressional district are registered Democrats. The Republican candidate takes a poll to assess his chances in a two-candidate race. He polls 1200 potential voters and finds that 621 plan to vote for the Republican candidate. Does the Republican candidate have a chance to win? Use a 4% level of significance. it an nean

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Hypothesis Testing for the mean. Note: Be sure to include a
verbal conclusion of your work.
(Use the 1-prop Z-test
6) A recent study claimed that at least 15% of
junior high students are overweight. In a
sample of 160 students, 18 were found to be
overweight. Using a 5% significance level test
the claim.
7) An airline claims that the no-show rate for
passengers is less than 5%. In a sample of 420
randomly selected reservations, 19 were
no-shows. Using a 1% significance level test the
airline's claim.
ɔle
8) Claim: Fifty-five percent of registered voters in
a congressional district are registered
Democrats. The Republican candidate takes a
poll to assess his chances in a two-candidate
race. He polls 1200 potential voters and finds
that 621 plan to vote for the Republican
candidate. Does the Republican candidate have
a chance to win? Use a 4% level of significance.
it an
nean
Transcribed Image Text:Hypothesis Testing for the mean. Note: Be sure to include a verbal conclusion of your work. (Use the 1-prop Z-test 6) A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. Using a 5% significance level test the claim. 7) An airline claims that the no-show rate for passengers is less than 5%. In a sample of 420 randomly selected reservations, 19 were no-shows. Using a 1% significance level test the airline's claim. ɔle 8) Claim: Fifty-five percent of registered voters in a congressional district are registered Democrats. The Republican candidate takes a poll to assess his chances in a two-candidate race. He polls 1200 potential voters and finds that 621 plan to vote for the Republican candidate. Does the Republican candidate have a chance to win? Use a 4% level of significance. it an nean
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