A hypothesis test is to be performed. Determine the null and alternate hypotheses. In 1995 , the average duration of long-distance telephone calls originating in one town was 7.7 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1995 mean of 7.7 minutes
A hypothesis test is to be performed. Determine the null and alternate hypotheses. In 1995 , the average duration of long-distance telephone calls originating in one town was 7.7 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1995 mean of 7.7 minutes
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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A hypothesis test is to be performed. Determine the null and alternate hypotheses.
In
1995
, the average duration of long-distance telephone calls originating in one town was
7.7
minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the
1995
7.7
minutes
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