Question 10.10. Suppose the weights of the contents of cans of mixed nuts have a normal distribution with mean 32.6 ounces and standard deviation 0.4 ounce.
If two packages are randomly selected, what is the probability that the average weight is less than 32 ounces?
Round to one decimal place. (Points : 1) |
[removed] 1.7%
[removed] 2.3%
[removed] 1.3%
[removed] 2.5% Question 4.4. The city of Madison regularly checks the water quality at swimming beaches located on area lakes. The concentration of fecal coliforms, in number of colony forming units (CFU) per 100 ml of water, was measured each day for fifteen days during the summer at one beach.
180, 1600, 90, 140, 50, 260, 887 ,90, 380, 110, 12, 60, 20, 340, 80.
With reference to the given data, find the sample 90th percentile. (Points : 1) |
[removed] 525
[removed] 631
[removed] 532
[removed] 498
Question 9.9. The city of Madison regularly checks the water quality at swimming beaches located on area lakes. The concentration of fecal coliforms, in number of colony forming units (CFU) per 100 ml of water, was measured each day for fifteen days during the summer at one beach.
180, 1600, 90,140, 50, 260, 887, 90, 380, 110, 12, 60, 20, 340, 80.
With reference to the given data:
Find the first quartile (Points : 1) |
[removed] 180
[removed] 19
[removed] 60
[removed] 20
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Question 10.10. The city of Madison regularly checks the water quality at swimming beaches located on area lakes. The concentration of fecal coliforms, in number of colony forming units (CFU) per 100 ml of water, was measured each day for fifteen days during the summer at one beach.
180, 1600, 90, 140, 50, 260, 887 ,90, 380, 110, 12, 60, 20, 340, 80.
With reference to the given data:
Find the third quartile (Points : 1) |
[removed] 380
[removed] 180
[removed] 340
[removed] 887
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