A sample of 12 items yields = 48.5 grams and s = 1.5 grams.Assuming a normal distribution,construct a 90 percent confidence interval for the population mean weight.
A)[47.722,49.278]
B)[47.788,49.212]
C)[45.806,51.194]
D)[47.865,49.135]

Question

A sample of 12 items yields  = 48.5 grams and s = 1.5 grams.Assuming a normal distribution,construct a 90 percent confidence interval for the population mean weight.
A)[47.722,49.278] 
B)[47.788,49.212] 
C)[45.806,51.194] 
D)[47.865,49.135]

Quizplus · Accepted Answer

The Answer of A sample of 12 items yields  = 48.5 grams and s = 1.5 grams.Assuming a normal distribution,construct a 90 percent confidence interval for the population mean weight.
A)[47.722,49.278] 
B)[47.788,49.212] 
C)[45.806,51.194] 
D)[47.865,49.135]

A Sample of 12 Items Yields = 48