Ungrouped and a grouped frequency distribution
Develop both an ungrouped and a grouped frequency distribution for the data given below:
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A study was conducted to determine the mean amount spent on birthday gifts for typical family having two children. A sample of 190 was taken, and the mean amount spent was $234.01. Supposing a standard deviation equal to $35.51, determine the 98%
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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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Suppose that the population of heights of female college students is approximately normally distributed with mean m of 64.64 inches and standard deviation s of 6.02 inches. A random sample of 98 heights is obtained. Show all work.
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