Mathematics, 18.12.2021 14:00 lilpeepxliltracy
An industrial designer wants to determine the average amount of time it takes an adult to assemble an "easy to assemble" toy. a sample of 16 times yielded an average time of 19.9 minutes, with a sample standard deviation of 6 minutes. Assuming normally of assembly times, provide a 90% confidence interval for the mean assembly time.
A. (17.43. 22.37)
B. (17.27.22.53)
C. (18.4, 21.4)
D. (16.9, 22.9)
Answers: 3
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An industrial designer wants to determine the average amount of time it takes an adult to assemble a...
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