A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was not equal to 9.4 minutes, which is the average for the state. Determine The null and alternative hypotheses for the test described. A) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu9.4 $ minute long-distance telephone call in the town B) $ \mathrm{H}_{0}: \mu \neq 9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu=9.4 $ minute long-distance telephone call in the town C) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu \neq 9.4 $ minute long-distance telephone call in the town D) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu

Question

A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was not equal to 9.4 minutes, which is the average for the state. Determine The null and alternative hypotheses for the test described.
A) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu>9.4 $ minute long-distance telephone call in the town
B) $ \mathrm{H}_{0}: \mu \neq 9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu=9.4 $ minute long-distance telephone call in the town
C) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu \neq 9.4 $ minute long-distance telephone call in the town
D) $ \mathrm{H}_{0}: \mu=9.4 $ minute long-distance telephone call in the town $ \mathrm{H}_{\mathrm{a}}: \mu<9.4 $ minute long-distance telephone call in the town

Quizplus · Accepted Answer

The null hypothesis ($ \mathrm{H}_{0} $) states that the mean duration is equal to 9.4 minutes, while the alternative hypothesis ($ \mathrm{H}_{a} $) states that it is not equal to 9.4 minutes, aligning with the company's claim.

A Long-Distance Telephone Company Claims That the Mean Duration of Long-Distance