Assume that the time it takes the housekeepir Calculate the mean and variance for the distril Select one: O a. 37.5 and 50.08 O b. 15.5 and 50.08 O c. 51.2 and 36.6 O d. 37.5 and 78.5

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Chapter1: Combinatorial Analysis
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Assume that the time it takes the housekeeping crew of a local hotel to clean a room varies uniformly between 25 and 50 minutes.
Calculate the mean and variance for the distribution.
Select one:
O a. 37.5 and 50.08
O b. 15.5 and 50.08
O c. 51.2 and 36.6
O d. 37.5 and 78.5
Transcribed Image Text:Assume that the time it takes the housekeeping crew of a local hotel to clean a room varies uniformly between 25 and 50 minutes. Calculate the mean and variance for the distribution. Select one: O a. 37.5 and 50.08 O b. 15.5 and 50.08 O c. 51.2 and 36.6 O d. 37.5 and 78.5
If the weights of 8000 men follows a normal distribution with mean 67 kg. and the standard deviation 10 kg. If another man was
selected randomly, find the probability that his weight is between 60 and 80 kg
Select one:
O a. 0.6612
O b. 0.754
O c. 0.6541
O d. 0.741
Transcribed Image Text:If the weights of 8000 men follows a normal distribution with mean 67 kg. and the standard deviation 10 kg. If another man was selected randomly, find the probability that his weight is between 60 and 80 kg Select one: O a. 0.6612 O b. 0.754 O c. 0.6541 O d. 0.741
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