Question: A random sample of 64 units have average 16 and standard deviation 0.8. Find a 80% confidence interval. (12.152,15.358) B (15.872,16.128) C) (13.672,15.228) D) (12.578,14.451)

A random sample of 64 units have average 16 and standard

A random sample of 64 units have average 16 and standard deviation 0.8. Find a 80% confidence interval. (12.152,15.358) B (15.872,16.128) C) (13.672,15.228) D) (12.578,14.451)

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