1. In your own words, summarize the results of your statistical analyses of the mean number of hours of TV watched by adults in the US. You should briefly describe the data and reports descriptive statistics (sample size, sample mean). Describe results of the inferential statistics that you found, including the significance test (t test for a mean) and confidence interval. Report the t statistic, degrees of freedom, p value, and ?-level (significance level) that you used for your significance test. Be sure to include your hypotheses and your decision about the null hypothesis. Finally, provide a substantive conclusion about the mean amount of TV watched by adults in the US along with evidence to support that conclusion.

Significance test for a mean with review of confidence interval for a mean

Statistical analysis applications

You can use the Art of Stats applications at https://artofstat.com/web-apps

• Describing and exploring quantitative data https://istats.shinyapps.io/EDA_quantitative/
• Inference for a mean https://istats.shinyapps.io/Inference_mean/
• The t distribution https://istats.shinyapps.io/tdist/

Information for homework 4:

Use the data from the 2018 General Social Survey. The raw data are in the filegss_2018_tvhours.txt; a frequency distribution of the variable is in the filegss_2018_tvhours.xls; and the data are available in the Art of Stat app Inference for a Population mean as Data From Textbook, and the Dataset TV Hours. The data are a random sample from the adult population in the US.

Variable

Hours watching TV each day TVHOURS

TV hours Frequency 145 349 376 240 169 ODO NO UI A W N H O LOO 63 13 38 6 23 12 14 15 16 AHHWAND 17 18 20 24 Total 1555