Question

Listed below are foot lengths in inches for 11 randomly selected people taken in 1988 Find the range, variance, and standard deviation for the given sample data Include appropriate units in the results Ave the statisics representative of the current popudation of all people? 86 87 103 92 91 103 96 86 97 86 94o The range of the sample data is (Type an integer or a decimal. Do not round) The standard deviation of the sample data isa (Round to two decimal places as needed) The variance of the sample data is (Round to two decimal places as needed) Are the statitics representative of the current population of all peopele OA The statistics are representative because they are taken from a random sample OB The statintics are representative because the standard devlation of the sanple data less than 1 OC. Secethe measurements were made in 1588is not necessarly representate of the populaton todey OD. The statistics are not representative becaune a smaller sample is needed to repeseet the ppulaton Cick to seiect your answens) H Type here to search wwww o Sacoce 7 6 4 2 C T R A setar K H G o ock

Answer 1

8.6 8.6 8.6 8.7 9.1 9.2 9.4 9.6 9.7 10.3 10.3 Σx = 102.1 (x-x) 0.4649 0.4649 0.4649 0.3385 0.0331 0.0067 0.0140 0.1012 0.1749 1.0367. 1.0367 Σ(x-X)2 =4.1364

Mean =x = x/n = 9.28182 Variance = {(x–872 = 0.41364 n-1 Standard deviation = Variance = 0.6431 a) Range =highest value-lowest value =102.1-8.6 =1.7 b) Standard deviation s =0.6431 c) Variance =0.41364 The statistic are representative because they are taken from the random sample 1st option is correct