(23 unr Q Search * Dashbc * Course * Module and Module * Find Sc / oneink ( ) Lecture NI X am Group ali Group y! 1.6745 y! A rese: Q Check + X C https://imath.nku.edu/assessment/showtest.php?action=skip&to=2 Course Forums Calendar Gradebook Log Out Home > STA 205-021 F22, 2nd 7 weeks > Assessment gary steurer HW 5.2: Confidence Interval for the Mean Due Mon 11/21/2022 11:59 pm Show Intro/ Instructions Questions The Cleaning Institute conducted a survey in 2009 of 865 adults asking each adult the number of times they wash their hands per day. The mean number of times those sampled washed their hands was 8.698 with a standard deviation of 6.764. Researchers would like to include a 95% confidence interval. C Q1 (3/8) Q 2 (0/8) How many degrees of freedom would be associated with the t-distribution? of = Q 3 (0/8) . With 95% confidence, we estimate the mean number of times an individual washes their hands is between and Q 4 (0/8) (The appropriate t critical point is t = 1.963. Q 5 (0/4) Round the limits of your interval to 4 decimal places. DQ6 (0/2) Based on the interval computed, can we conclude the typical American adult washes their hands fewer than 9 times per day, on average? Q7 (0/2) Yes. The interval falls entirely below 9. O Q 8 (0/10) O Yes. Most of the interval falls below 9. Grade: 3/50 ONo. The interval extends above 9. Print Version Points possible: 8 License This is attempt 1 of 3. + Submit Type here to search 11:05 AM O 24'F Sunny ^ D 9 @ (() 11/20/2022