What is the age distribution of adult shoplifters (21 years of age or older) in supermarkets? The following is based on information taken from the National Retail Federation. A random sample of 895 incidents of shoplifting gave the following age distribution. Estimate the mean age, sample variance, and sample standard deviation for the shoplifters. For the class 41 and over, use 45.5 as the class midpoint. (Round your answers to one decimal place.) Age range (years) Number of shoplifters 31-40 359 21-30 41 and over 249 287 x = 2 = S=

The number of credits being taken by a sample of 13 full-time college students are listed below. Find the mean, median, and mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. 8 10 11 11 8 7 7 7 9 77 78 Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The mean is. (Type an integer or decimal rounded to one decimal place as needed.) OB. The data set does not have a mean. Does the mean represent the center of the data? OA. The mean represents the center. OB. The mean does not represent the center because it is not a data value. OC. The mean does not represent the center because it is the largest data value. O D. The mean does not represent the center because it is the smallest data value. OE. The data set does not have a mean. Find the median. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The…

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 89 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 38 21 16 14 x =   s2 =   s =

The following data set represents performance scores from a sample of participants in a psychology experiment. What is the standard deviation of the data set below? Enter your answer in number. If you have decimals, round to the closest whole number. Score: 67, 87, 96, 59, 70, 83, 92, 78, 84, 79, 85