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Standard deviation of the sample mean

The IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.

1) What is the probability that a randomly person has an IQ between 85 and 115?

2) Find the 90th percentile of the IQ distribution.

3) If a random sample of 100 people is selected, what is the standard deviation of the sample mean?

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Basic Statistics: Standard deviation of the sample mean

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Standard deviation of the sample mean

Reference No:- TGS0680051

Have a Question? (oR Write a Review)

Recent Questions Asked Basic Statistics

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Standard deviation of the sample mean

Reference No:- TGS0680051

Recent Questions Asked Basic Statistics

Q : Determining the option premium

Q : What is the conclusion of the test

Q : What is browning''s federal income

Q : Calculate the equivalent cost per unit for labor

Q : Standard deviation of the sample mean

Q : What is inverness net pay

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