Consumer Reports stated that the mean time for a Chrysler Concorde to go from 0 to 60 miles per hour was 8.7 seconds. (a) If you want to set up a statistical test to challenge the claim of 8.7 seconds, what would you use for the null hypothesis? Ou > 8.7 Ou< 8.7 O = 8.7 Ou+ 8.7 (b) The town of Leadville, Colorado, has an elevation over 10,000 feet. Suppose you wanted to test the claim that the average time to accelerate from 0 to 60 miles per hour is longer in Leadville (because of less oxygen). What would you use for the alternate hypothesis? Ou> 8.7 Ou = 8.7 Ou 8.7 Ou< 8.7 (c) Suppose you made an engine modification and you think the average time to accelerate from 0 to 60 miles per hour is reduced. What would you use for the alternate hypothesis? Ou- 8.7 Ou< 8.7 OH 8.7 Ou > 8.7 (d) For each of the tests in parts (b) and (c), would the P-value area be on the left, on the right, or on both sides of the mean? O left; right O both; left O left; both O right; left
Consumer Reports stated that the mean time for a Chrysler Concorde to go from 0 to 60 miles per hour was 8.7 seconds. (a) If you want to set up a statistical test to challenge the claim of 8.7 seconds, what would you use for the null hypothesis? Ou > 8.7 Ou< 8.7 O = 8.7 Ou+ 8.7 (b) The town of Leadville, Colorado, has an elevation over 10,000 feet. Suppose you wanted to test the claim that the average time to accelerate from 0 to 60 miles per hour is longer in Leadville (because of less oxygen). What would you use for the alternate hypothesis? Ou> 8.7 Ou = 8.7 Ou 8.7 Ou< 8.7 (c) Suppose you made an engine modification and you think the average time to accelerate from 0 to 60 miles per hour is reduced. What would you use for the alternate hypothesis? Ou- 8.7 Ou< 8.7 OH 8.7 Ou > 8.7 (d) For each of the tests in parts (b) and (c), would the P-value area be on the left, on the right, or on both sides of the mean? O left; right O both; left O left; both O right; left
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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Transcribed Image Text:Consumer Reports stated that the mean time for a Chrysler Concorde to go from 0 to 60 miles per hour was 8.7 seconds.
(a) If you want to set up a statistical test to challenge the claim of 8.7 seconds, what would you use for the null hypothesis?
Ou> 8.7
Ο με 8.7
OH = 8.7
Ou+ 8.7
(b) The town of Leadville, Colorado, has an elevation over 10,000 feet. Suppose you wanted to test the claim that the average time to accelerate from 0 to
60 miles per hour is longer in Leadville (because of less oxygen). What would you use for the alternate hypothesis?
Ομ> 8.7
Ou= 8.7
Ou+ 8.7
Ou< 8.7
(c) Suppose you made an engine modification and you think the average time to accelerate from 0 to 60 miles per hour is reduced. What would you use for
the alternate hypothesis?
OH = 8.7
Ou< 8.7
Ou+ 8.7
Ou> 8.7
(d) For each of the tests in parts (b) and (c), would the P-value area be on the left, on the right, or on both sides of the mean?
O left; right
O both; left
O left; both
O right; left
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