What is an estimator? The mass of vitamin E in a capsule manufactured by a certain drug company is normally distributed
with standard deviation 0.042mg. A random sample of 36
capsules was analyzed and the mean mass of vitamin E was
found to be 5.12 mg. Calculate a symmetric 96% confidence
interval for the population mean mass of vitamin E per capsule.
( (1)​

How long must a student wait for feedback on how they did on the accuplacer? a. 1 day b. 1 week c. 1 month d. immediate feedback (no wait)

Astudy group should stay around 3-6 people. true or false

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