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Q4 A sample of 80 rivets manufactured by a company has mean diameter 1.52 cm. estimate...


Q4 A sample of 80 rivets manufactured by a company has mean diameter 1.52 cm. estimate 95% confidence interval for the mean d
Q4 A sample of 80 rivets manufactured by a company has mean diameter 1.52 cm. estimate 95% confidence interval for the mean diameter of all rivets with standard deviation 0.15 cm manufactured by the company.
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Answer #1

Mean is given 95% confidence interval for single given by (X I t s Vn a) since y = 1.52, S = 0.15, n = 80 tyg = 1.66 do och i

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