Use the information in the table below to answer the following questions about the relationship between class identification and hours of TV watching per day.

a. A researcher believes that those in the working class will watch more TV than those in the middle class (in the population). Is there any evidence for this? Based on your calculations, do you think there might be a statistically significant difference between the two groups? Explain your reasoning.

b. A different researcher in the same lab believes that those in the upper class will watch less TV than those in the lower class. Is there any evidence for this? Based on your calculations, do you think there might be a statistically significant difference between the two groups? Explain your reasoning.

c. The same researcher from (b) was in charge of the sampling methods used for this study. He used a multi-stage cluster sample and was pleased that he built a fairly good representative sample. Unfortunately, that left him with a relatively small sample of respondents who identify as upper class, and his main interests is in respondents who identify as upper class. What is the problem with having a small sample size? What type of sampling technique could he have used to rectify this problem? What would have been the advantages of this change? What would have been the disadvantages?