Multiple Choice
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]
Correct Answer:

Verified
Correct Answer:
Verified
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