Mathematics, 07.12.2019 04:31, angiezavala61

Arandom sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet. assume that the sizes of all houses in this city have an approximate normal distribution. the upper bound the 90% confidence interval for the mean size of all houses in this city is: a. 2110 b. 1941 c. 1974 d. 1968 e. 1894

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Arandom sample of 20 houses selected from a city showed that the mean size of these houses is 1880 s...