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Sample mean and sample standard deviation

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1. A sample set of scores are 23,48,49,55,57,63 and 72. (a) find the sample mean and sample standard deviation. (b)find the outliers using 1.5IQR rule.

2. Eight numbers have a mean of 16. Given that the first seven numbers have atotal of 130, determine the value of the eighth number.

3. The windspeeds at 10 coastal locations have mean 25 knots and sample standarddeviation 4 knots.The windspeeds at 20 inland locations have mean 20knots and sample standard deviation 5 knots. Calculate the mean and samplestandard deviation of the combined set of 30 windspeeds.

Reference no: EM131229295

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