The Class 2 group for the next Boy's and Girt's Championships female 100m dash has 56 females registered. The average running time of the group is 23 seconds with a variance of 169 seconds. If a random sample of 32 males are taken from the group what is the probability that the sample average running time will be greater than 18 seconds? Select one O a.0.3300 OD06700 OC0 5319 d. 0.4681

ENGR.ECONOMIC ANALYSIS
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Author:NEWNAN
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Chapter1: Making Economics Decisions
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The Class 2 group for the next Boy's and Girl's Championships female 100m dash has 56 females registered. The average
running time of the group is 23 seconds with a variance of 169 seconds. If a random sample of 32 males are taken from the
group what is the probability that the sample average running time will be greater than 18 seconds?
Select one
O a 0.3300
O b. 0.6700
O C.0.5319
O d. 0.4681
Transcribed Image Text:The Class 2 group for the next Boy's and Girl's Championships female 100m dash has 56 females registered. The average running time of the group is 23 seconds with a variance of 169 seconds. If a random sample of 32 males are taken from the group what is the probability that the sample average running time will be greater than 18 seconds? Select one O a 0.3300 O b. 0.6700 O C.0.5319 O d. 0.4681
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