This paper circulates around the core theme of to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher together with its essential aspects. It has been reviewed and purchased by the majority of students thus, this paper is rated 4.8 out of 5 points by the students. In addition to this, the price of this paper commences from £ 99. To get this paper written from the scratch, order this assignment now. 100% confidential, 100% plagiarism-free.
Previously, an
organization reported that teenagers spent 4.5 hours per week, on average, on
the phone. The organization thinks that, currently, the mean is higher. Fifteen
randomly chosen teenagers were asked how many hours per week they spend on the
phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0.
Conduct a hypothesis test, the Type I error is:
a. to conclude that the
current mean hours per week is higher than 4.5, when in fact, it is higher
b. to conclude that the
current mean hours per week is higher than 4.5, when in fact, it is the same
c. to conclude that the
mean hours per week currently is 4.5, when in fact, it is higher
d. to conclude that the
mean hours per week currently is no higher than 4.5, when in fact, it is not
higher