Question

A hypothesis test is to be performed. Determine the wall and alternate hypothesis. In 1993, the average duration of long-distance telephone calls originating is one town 6.6 minutes. A long-distance telephone company wants to perform a hypothesis test to dete whether the average duration of long-distance phone calls has changed from the 1993 me of minutes. A. Ho: -6.6 minutes H: > 6.6 minutes B. H: -6.6 minutes HA 66 minutes C. H: -6.6 minutes 6 H D. H: H N .6 minutes 6.6 minutes -66 minutes 2. Traditionally in hypothesis testing, the null hypothesis represents the status quo" which will be overturned only if there is evidence against it. Which of the statements below might representa hypothesis? A. The exercise improved endurance. B. The defendant is guilty. C. The treatment has no effect. Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average duration of long-distance telephone calls originating in one town was 6.6 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 1994 mean of 6.6 minutes. A. Right-tailed B. Left-tailed C. Two-tailed

Answer 1

According to the hypothesis testing