Data lists the average monthly snowfall
The following data lists the average monthly snowfall for January in 15 cities around the US:
12 40 24 18 38 47 37 13
14 1 29 11 38 30 10
Find the mean, variance, and standard deviation. Please show all of your work.
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A confidence interval determine for the population mean is given to be (35.71, 44.14). If the standard deviation is 13.045 and the sample size is 52, answer each of the following (show all work):
Ariana took two hour longer to drive 360 mi on first day of trip than she took to drive 270 mi. on second. If the speed was same on both days, find the driving time each day?
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One heads towards Big Island at 195 mph. Other heads in opposite direction towards Kauai at 220 mph. How far apart are they after twenty minutes?
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