Cigarette Tar Content Narrative
Ten measurements of the tar content of a certain brand of cigarette are 13.5, 14.0, 13.9, 14.2, 15.1, 14.6, 13.8, 14.0, 14.1, and 14.7 in milligrams per cigarette. Assume these measurements were taken from a population with a normal distribution.
-One study revealed a child under the age of 10 watches television 4.5 hours per day. A group of families from a certain community would like to believe that their children watch less television than the national average. A random sample of 14 children from the community yielded a mean of 4.1 hours per day with a standard deviation of 1.2. Test the appropriate hypotheses at the = 0.01 level. Assume the viewing time is normally distributed and interpret your results.

Question

Cigarette Tar Content Narrative
Ten measurements of the tar content of a certain brand of cigarette are 13.5, 14.0, 13.9, 14.2, 15.1, 14.6, 13.8, 14.0, 14.1, and 14.7 in milligrams per cigarette. Assume these measurements were taken from a population with a normal distribution.
-One study revealed a child under the age of 10 watches television 4.5 hours per day. A group of families from a certain community would like to believe that their children watch less television than the national average. A random sample of 14 children from the community yielded a mean of 4.1 hours per day with a standard deviation of 1.2. Test the appropriate hypotheses at the  = 0.01 level. Assume the viewing time is normally distributed and interpret your results.

Quizplus · Accepted Answer

The Answer of Cigarette Tar Content Narrative
Ten measurements of the tar content of a certain brand of cigarette are 13.5, 14.0, 13.9, 14.2, 15.1, 14.6, 13.8, 14.0, 14.1, and 14.7 in milligrams per cigarette. Assume these measurements were taken from a population with a normal distribution.
-One study revealed a child under the age of 10 watches television 4.5 hours per day. A group of families from a certain community would like to believe that their children watch less television than the national average. A random sample of 14 children from the community yielded a mean of 4.1 hours per day with a standard deviation of 1.2. Test the appropriate hypotheses at the  = 0.01 level. Assume the viewing time is normally distributed and interpret your results.