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Need help in the following The researcher inspects the amount of time it takes to produce tshirts in a garment factory. A sample of 49

Need help in the following

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The researcher inspects the amount of time it takes to produce tshirts in a garment factory. A sample of 49 t-shirts is drawn and where the sample mean is 1?.1 minutes and the sample standard deviation is 2.1 minutes. From this informationr which of the following is a 9936 confidence interval for the mean number of tshirts produced? 0 a. 13.35 and 13.99 D b. 16.36 and 1191] O c. 113? and 16.33 D d. 24.56 and 16.88

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