Problem
point(s) possible The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d). (a) Do you think the variable "weekly time spent watching television" would be normally distributed? If not, what shape would you expect the variable to have? A. The variable "weekly time spent watching television" is likely normally distributed. B. The variable "weekly time spent watching television" is likely skewed right, not normally distributed. C. The variable "weekly time spent watching television" is likely skewed left, not normally distributed. D. The variable "weekly time spent watching television" is likely symmetric, but not normally distributed E. The variable "weekly time spent watching television" is likely uniform, not normally distributed (b) According to a certain survey, adults spend 235 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.93 hours. If a random sample of 60 adults is obtained, describe the sampling distribution of $x$, the mean amount of time spent watching television on a weekday. Next
Solution
Step 1 ：The question is asking about the distribution of the variable 'weekly time spent watching television'. This is a theoretical question and does not require any calculations.
Step 2 ：The distribution of this variable would depend on the habits of the population being studied. However, it is likely that the distribution would be skewed right. This is because while most people probably watch a moderate amount of television each week, there are likely a few people who watch a very large amount of television. These outliers would pull the mean to the right, creating a right skew.
Step 3 ：\(\boxed{\text{Final Answer: B. The variable 'weekly time spent watching television' is likely skewed right, not normally distributed.}}\)
