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You measure 49 backpacks' weights, and find they have a mean weight of 77 ounces. Assume the population standard deviation is 4.7 ounces. Based on

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You measure 49 backpacks' weights, and find they have a mean weight of 77 ounces. Assume the population standard deviation is 4.7 ounces. Based on this, construct a 95% confidence interval for the true population mean backpack weight. (Note you will use the z distribution for your critical value since the population standard deviation is given.) Write your answer in the form of point estimatet+margin of error . Give your answers as decimals, to two places. + ounces Write your answer using inequality notation. | SP% |

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