11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 data Q Based on the boxplot above, identify the 5 number summaryiaW m m ,8 129 The stem-and-leaf plot above shows house sale prices over the last week in Tacoma. What was the least expensive house sold? Give your answer in dollars. 5[:1 Calculate the standard deviation of the sample quantitative data shown, to two decimal places. Standard deviation: [: Calculate the mean, variance, and standard deviation of following \"Population" data: 93,86,70,86,and 60. Round to two decimal places as needed Click this video to learn more about the formula Li\" a? 93 ' M (a: - #42 Mean [:] 93 l: [:1 Variance D 8\" [:1 [:J 3:22:21 [3 70 [:J [:J 86 l: [:1 6 [:1 [:J Yessica thought that there was a correlation between the amount of time students slept the evening before their final exam and their final exam grade. She took an SRS of 5 students in her class and recorded the sleep time the evening before their final exam, and their final exam score. Let the sleep time the evening before the final exam represents the explanatory variable, and the final exam score be the response variable. Below is a sample data set. as (hour) y (score) 1 5 62 2 9 100 3 4 56 4 7 83 5 6 73 Calculate the sample correlation coefficient (r) to three decimal places. r5 Why would we expect the correlation coefficient to be positive? D As the sleep time increases, exam score decreases C] As the sleep time decreases, exam score increases C] There is no change in exam score to sleep time C] As the sleep time increases, exam score increases 4of5 6. It is known that the mean cholesterol level for all Americans is 190. Construct the relevant hypothesis test to show that only children have an average higher cholesterol level than the national average. We test 100 only children and nd out the mean is 198. You can use your own condence level. (All Americans Standard Deviation is 15) (10 points) 7. Newsweek performed a poll in which 567 American parents were asked the question, \"Would you prefer to have your child taught by a male or female for grades K-2?\" Only 12% responded that they would prefer to have their child taught by a male in grades K-2. Construct a 99% condence interval for the poll. (10 points)