Question

The amount of television viewed by today's youth is of primary concern to Parents Against Watching Television (PAWT). 300 parents of elementary school-aged children were asked to estimate the number of hours per week that their child watches television. The mean and the standard deviation for their responses were 17 and 3, respectively. Assuming a normal distribution give an interval where you believe approximately 95% of the television viewing times fell in the distribution.

a. less than 14 and more than 20 hours per week
b. less than 23
c. between 8 and 26 hours per week
d. between 11 and 23 hours per week

Answer 1

Approximately 95% of the television viewing times fell in the distribution between 8 and 26 hours per week

Step-by-step explanation:

A stem-and-leaf presentation was constructed for the data that showed that the distribution of times was a mound-shaped distribution.

A stem-and-leaf display or stem-and-leaf plot is a stratagem for presenting quantitative data in a graphical format, similar to a histogram, to assist in visualizing the shape of a distribution. are useful tools in exploratory data analysis. So the graph that resulted was a mound shaped distribution which concluded that 95% of the television viewing times fell in the distribution between 8 and 26 hours per week