Probability sample mean

ibanana

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Joined
Nov 25, 2019
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So the question goes like this:

A large shipment of biscuit packed in boxes is delivered to a supermarket. The manager is told that the
weights of the biscuit boxes are normally distributed, with a mean of 1210 grams and a standard
deviation of 25 grams. A random sample of 10 boxes has a mean weight are measured. Find the
probability that the sample mean to be
(i) is greater than 1240 grams,
(ii) is less than 1200 grams.

I don't really understand tho :/
 
So the question goes like this:

A large shipment of biscuit packed in boxes is delivered to a supermarket. The manager is told that the
weights of the biscuit boxes are normally distributed, with a mean of 1210 grams and a standard
deviation of 25 grams. A random sample of 10 boxes has a mean weight are measured. Find the
probability that the sample mean to be
(i) is greater than 1240 grams,
(ii) is less than 1200 grams.

I don't really understand tho :/
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Please share your work/thoughts about this assignment

How would you "normalize" the sample data?
 
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