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A random sample of 101 bags of flower is weighed. It is found that the sample mean is 453.08 gm and the sample standard deviation

A random sample of 101 bags of flower is weighed. It is found that the sample mean is 453.08 gm and the sample standard deviation is 5.42 gm. It is assumed that the weights of the bags of flour are Normally distributed with unknown mean and unknown variance

a) Find a 95% confidence interval for .

b) Find a 95% confidence interval for 2.

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