Question 10 The high temperatures (in degrees Fahrenheit) of a random sample of 10 small towns are: 98.8 97.8 99.4 99.1 97.5 97 96.3 96.9 96.7 97.9 Assume high temperatures are normally distributed. Based on this data, find the 9% confidence interval of the mean high temperature of towns. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 99% C.I. - Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places. Question Help: Message instructor Submit Question W Rain... O hp prt sc de 19 DDI 141 6 9 & 96 8 5 6Score: 5/14 6/14 answered Question 12 0/1 pt You are interested in finding a 98% confidence interval for the average commute that non- residential students have to their college. The data below show the number of commute miles for 15 randomly selected non-residential college students. 5 8 23 9 19 8 18 20 17 27 5 9 28 25 21 a. To compute the confidence interval use a ?| distribution. b. With 98% confidence the population mean commute for non-residential college students is between and miles. c. If many groups of 15 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles. Hint: Hints Video Textbook Question Help: ) Message instructor O SO W Rain... prise delete 8 144 10 & 5 8 U PChapter 8 Confidence Intervals (Mean) Progress saved Done Score: 5/14 6/14 answered Question 11 0/1 You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 81 67.4 77.1 88.6 82.6 91.4 81.4 85.2 88.5 Find the 90% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. Assume the data is from a normally distributed population. 90% C.1. = Question Help: Message instructor Submit Question W Rain. O hp 112 prt so 144 10 8 C+ 16 0 & K % 8 9 5 6 P