An individual can take either a scenic route to work or a non-scenic route. She decides that use of the non-scenic route can be justified only if it reduces the mean travel time by more than 9 minutes. (a) If ?1 refers to the mean travel time for the non-scenic route and ?2 to the mean travel time for the scenic route, what hypotheses should be tested? ?1 − ?2 = −9 ?1 − ?2 < −9 ?1 − ?2 < −9 ?1 − ?2 > −9 ?1 − ?2 =−9 ?1 − ?2 ≠ −9 ?1 − ?2 = 9 ?1 − ?2 < 9 ?1 − ?2 = 9 ?1 − ?2 > 9 B) If ?1 refers to the mean travel time for the scenic route and ?2 to the mean travel time for the non-scenic route, what hypotheses should be tested? ?1 − ?2 = −9 ?1 − ?2 < −9 ?1 − ?2 = −9 ?1 − ?2 > −9 ?1 − ?2 = −9 ?1 − ?2 ≠ −9 ?1 − ?2 = 9 ?1 − ?2 < 9 ?1 − ?2 = 9 ?1 − ?2 > 9
An individual can take either a scenic route to work or a non-scenic route. She decides that use of the non-scenic route can be justified only if it reduces the mean travel time by more than 9 minutes. (a) If ?1 refers to the mean travel time for the non-scenic route and ?2 to the mean travel time for the scenic route, what hypotheses should be tested? ?1 − ?2 = −9 ?1 − ?2 < −9 ?1 − ?2 < −9 ?1 − ?2 > −9 ?1 − ?2 =−9 ?1 − ?2 ≠ −9 ?1 − ?2 = 9 ?1 − ?2 < 9 ?1 − ?2 = 9 ?1 − ?2 > 9 B) If ?1 refers to the mean travel time for the scenic route and ?2 to the mean travel time for the non-scenic route, what hypotheses should be tested? ?1 − ?2 = −9 ?1 − ?2 < −9 ?1 − ?2 = −9 ?1 − ?2 > −9 ?1 − ?2 = −9 ?1 − ?2 ≠ −9 ?1 − ?2 = 9 ?1 − ?2 < 9 ?1 − ?2 = 9 ?1 − ?2 > 9
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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An individual can take either a scenic route to work or a non-scenic route. She decides that use of the non-scenic route can be justified only if it reduces the mean travel time by more than 9 minutes.
(a) If ?1 refers to the mean travel time for the non-scenic route and ?2 to the mean travel time for the scenic route, what hypotheses should be tested?
?1 − ?2 = −9
?1 − ?2 < −9
?1 − ?2 < −9
?1 − ?2 > −9
?1 − ?2 =−9
?1 − ?2 ≠ −9
?1 − ?2 = 9
?1 − ?2 < 9
?1 − ?2 = 9
?1 − ?2 > 9
B) If ?1 refers to the mean travel time for the scenic route and ?2 to the mean travel time for the non-scenic route, what hypotheses should be tested?
?1 − ?2 = −9
?1 − ?2 < −9
?1 − ?2 < −9
?1 − ?2 = −9
?1 − ?2 > −9
?1 − ?2 > −9
?1 − ?2 = −9
?1 − ?2 ≠ −9
?1 − ?2 ≠ −9
?1 − ?2 = 9
?1 − ?2 < 9
?1 − ?2 < 9
?1 − ?2 = 9
?1 − ?2 > 9
?1 − ?2 > 9
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