Suppose the funnel experiment described in class was conduct

Suppose the funnel experiment (described in class) was conducted 17 times with the following results(in sec.): 5.3, 6.2, 4.8, 6.4, 5.2, 5, 6.7, 4.2, 4.3, 6.8, 4.4, 4.8, 7.1, 5.6, 6.6, 5, 4.3 a.) What percentage of outcomes are less than or equal to 5.0 seconds? (Pick letter corresponding to interval containing the best answer.) a : 10.0 b 10.1 20.0 c 20.1 40.0 d 40.1 50.0 e 50.0 b.) What percentage of outcomes are within one standard deviation of the mean? (Pick letter corresponding to interval containing the best answer.) a : 35.0 b 35.1 50.0 c 50.1 - 65.0 d 65.1 80.0 e 80.0 c.) What percentage of outcomes are within two standard deviations of the mean? (Pick letter corresponding to interval containing the best answer.) a : 50.0 b 50.1 70.0 c 70.1 85.0 d 85.1 95.0 e 95.0

Solution

a) Answer is- d

The percentage less than 5 seconds = 8/17= 47.06%

b) mean = 5.4529; standard deviation = 0.9862

The observations with in one standard deviaiton i.e ( 4.47 to 6.63) are 9

The percentage is = 9/17 = 52.9%

Answer is -C

c) The observations with in two standard deviaiton i.e ( 3.48 to 7.43) are 17

Answer is -e