A researcher, Warr (summarizing Putnam) claims that increases in watching television has led to fewer hours in the day to be active civically. Test that idea by comparing average days of church attendance in a year across people who watch less than average hours of television per day and those

who watch above average hours of television per day.

Hours of TV

Mean 22.3 20.8

sd 25.6 25.5

n 903 390

a. Use hypothesis testing procedures to determine if there is a statistically significant difference in

average number of days of church attendance across the TV groups. Be certain to interpret the

results. Use =0.01, 2-tail.

b. Use SDA and the GSS to conduct a hypothesis test for the difference of average frequency of visiting neighbors in a year by the two television groups.

You will need to recode the variable socommun the same way as in an earlier problem. You will

also need to recode tvhours to be two groups where one group is 0-3 hours of daily television

viewing and the other is 4-24 hours of daily television viewing. One group is below average, the

other above average. Use =0.01, 2-tail.

c. Interpret the results of these two statistical tests. Do these statistical findings support Warr's argument?