Chapter 3 SWOT X A Chapter 3 Homework - 2022FA - Course Hero x G Classify 8.4 + x 4 as an algebraic X + V X - C webassign.net/web/Student/Assignment-Responses/last?dep=30259129#Q22 D . . . New Tab G-Switch - Best Un... M Gmail YouTube Maps move Need Help? Read It Master It 22. [2/3 Points] DETAILS PREVIOUS ANSWERS BBBASICSTAT8 3.2.022. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER What was the age distribution of prehistoric Native Americans? Extensive anthropological studies in the southwestern United States gave the following information about a prehistoric extended family group of 81 members on what is now a Native American reservation. For this community, estimate the mean age expressed in years, the sample variance, and the sample standard deviation. For the class 31 and over, use 35.5 as the class midpoint. (Round your answers to one decimal place.) Age range (years) 1-10 11-20 21-30 31 and over Number of individuals 30 16 21 14 X = 17.8 $2 = 126.6 X S = 11.3 Need Help? Read It 23. [2/2 Points] DETAILS PREVIOUS ANSWERS BBBASICSTAT8 3.2.012. MY NOTES ASK YOUR TEACHER One indicator of an outlier is that an observation is more than 2.5 standard deviations from the mean. Consider the data value 80. (a) If a data set has mean 70 and standard deviation 5, is 80 a suspect outlier? O No, since 80 is more than 2.5 standard deviations above the mean. Yes, since 80 is more than 2.5 standard deviations above the mean. No, since 80 is less than 2.5 standard deviations above the mean. O Yes, since 80 is less than 2.5 standard deviations above the mean. OLOCBAL O Co 11:02 PM 9/30/2022 3