4. The National Sleep Foundation conducts an annual survey to track sleep related behaviors of U.S. adults. In their most recent survey, a random sample of 1,018 adults answered the question "About...

Extracted text: 4. The National Sleep Foundation conducts an annual survey to track sleep related behaviors of U.S. adults. In their most recent survey, a random sample of 1,018 adults answered the question "About how much actual sleep would you estimate you typically get on work nights or weeknights?" The frequency table below summarizes the responses by whether they were less than, equal to, or more than the recommended 7 to 9 hours of sleep and by the age group of the respondent. Less Than 7 Hours Typical Weeknight Sleep Time Recommended 7 to 9 Hours More Than 9 Hours Age Group Total 18 – 34 44 78 109 231 35 – 54 144 200 218 562 55 or older 47 77 101 225 Total 235 355 428 1,018 At the a =0.05 significance level, do the data provide convincing statistical evidence that there is an association between age group and typical weeknight sleep time for adults in the United States?