Question

PROBLEM 2 14 mars] Talent, Ltd, a Hollywood casting compa of first 20 men to be interviewed are College of Engineering 5056 54 55 61 60 51 The director of the movie wants men wh a statistics kind of a person, the director Su be acceptable. Does this group of (Hint: First, calculate sample standard company is selecting a group of 49 52 of people for more. The age es this group of people qualify for movie 57 51 59 62 52 54 ose ages are closely grouped around 55 years. Being suggests that a standard deviation of 3 years would 56 57 58 49 ard deviation and compare it with 3, then answer.]

Answer 1

sl no _ 55 ages xi-mean (xi-mean)^2 1| 50|| | -5.2| 27.04 2| 56| 0.4| 0.64 3 -0.2| 0.04 49| -6.2[. 33. 5| _ 52| -3.2| 6[ 57| 7| ৪ | 10| 59 3.3 | 1.৪ ০.৪ | 1.৪| ০.৪ | | 56 |||||||||||||||||||| | |s -0.2 0.04 33.64 60| -4.2 59 3.8 | 52| 54 | 49| 1104 23.04 17.64| 14.44 46.24 10.24 1.44 38.44 285.2 -3.2| -1.2| -6.2| | 20| mean = sum / number of men means 55.2 standard deviation= [(xi-mean)^2/(n-1)]^(1/2) SD= 3.874342

the SD of group is found to be 3.87 hence this group does not qualify as the suggested SD is 3 years