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ANEK [815]
3 years ago
6

Statistics show on average an adult person receives 425 pieces of mail each year with a standard deviation of 50. What are the m

ean and the standard error of the mean of this sampling distribution if all possible samples of size 100 are selected?
Mathematics
1 answer:
Kisachek [45]3 years ago
4 0

Answer:

The answer is 60.11

Step-by-step explanation:

An adult person receives 425 pieces of mail each year with a standard deviation of 50.

Now, we have the following details  :

Mean of sample = 425

sigma = 50

Standard error = \frac{425}{\sqrt{50} }

= \frac{425}{7.07} = 60.11

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Step-by-Step Solution:

In the Right Triangle formed to the extreme right, lets mark the angles as
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Therefore, from the Figure :-

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