QuestionYou are studying hypnotherapy's affect on sleep. You measure the hours of sleep for 10 individuals who follow hypnotherapy techniques and get the following results. \begin{tabular}{|r|r|r|} \hline 7.8 & 9 & 9.8 \\ \hline 8.9 & 8.4 & 9.6 \\ \hline 9 & 7.7 & 7.9 \\ \hline 8 & & \\ \hline \end{tabular} a. Find a 99\% confidence interval for the data (Round to 1 decimal place) $\square$ $\square$ ) b. Find the point estimate $\bar{x}=$ $\square$ hours (round to 2 decimals) c. Interpret the confidence interval The average sleeptime for a person who uses hypnotherapy is 8.61 hours $99 \%$ of the time We are $99 \%$ confident that the mean sleep time for people who use hypotherapy is between 7.8 and 9.4 hours We can be $99 \%$ confident that the mean sleep time for people who use hypontherapy is 8.61