how to know if a population is normally distributed if it’s not precised and the exercise?
Homework Answers
We have to look into some features of the population, like, if the range of the population is real line (or at least R+ ) , if it is symmetric , if its mean median and mode are all same ( if provided).
Another empirical method is , if we have some data points from the population, put it in the graph, if a bell shaped moderately kurtic figure appears, then it can be said that the population follows normal distribution.
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how
to know if a population is normally distributed if it’s not
precised and the exercise?
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Normally Distributed Population
For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample of 50 is taken from the population, what is the probability that the sample mean will be greater than 36.5?
Normally Distributed Population
For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample of 50 is taken from the population, what is the probability that the sample mean will be between 35 and 37.5?
If a population is known to be normally distributed with size 25 selected from the population?...
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approximately 95% of all values of a normally distributed population lie within how many standard deviations of the population mean
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Show that median is an unbiased estimator of population mean when population is normally distributed .
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