The mean value of land and buildings per acre from a sample farms is $1400, with a standard deviation of $200. The data set has a bell-shaped distribution. Using the empirical rule, determine which of the following farms, whose land and building values per acre are given, are unusual (more than two standard deviations from the mean). Are any of the data values very unusual (more than three standard deviations from the mean)? $1041 $1959 $1417 $693 $1217 $1643 Which of the farms are unusual (more than two standard deviations from the mean)? Select all that apply. O A. $693 O B. $1041 O Cc. $1417 O D. $1217 O E. $1643 OF. $1959 Which of the farms are very unusual (more than three standard deviations from the mean)? Select all that apply. O A. $1217 O B. $1041 O C.. $1643 O D. $693 D E. $1959 OF. $1417 O G. None of the data values are very unusual.

Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 58.1 degrees. Which of the following best describes the relationship between the computed mean and the actual​ mean?   Low Temperature ​(◦​F) 40−44 45−49 50−54 55−59 60−64   Frequency 2 6 11 6 3

The WAIS is an IQ test. Scores on the WAIS for the 20-34 age group are normally distributed with a mean 110 and a standard deviation of 25. Scores for the 60-64 age group are normally distributed with a mean of 90 and a standard deviation of 25.  Find the percent of 20-34-year-olds that have an IQ greater than 120.  a. 16% b. z= 0.4 or 40% c. 0.6554 or 65.54% d. 0.3446 or 34.46%

Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675 the third year, 11,850 the fourth year, and 13,075 the fifth year. a. Find the mean, median, and mode of this data. b. Explain which measure of central tendency will best predict how many miles Gina will drive in the sixth year. a. mean= 12,700; median= 13,156; no mode; the mean is the best choice because it is representative of the entire data set. b. mean= 13,156; median= 12,700; mode= 3,628; the median is the best choice because it is not skewed by the high outlier. c. mean= 13,156; median= 12,700; no mode; the mean is the best choice because it is representative of the entire data set. d. mean= 13,156; median= 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.