The number of violent crimes committed in a day possesses a distribution with a mean of 4.9 crimes per day and a standard deviation of 4 crimes per day. A random sample of 100 days was observed, and the mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean. approximately normal with mean = 4.9 and standard deviation = 0.4 shape unknown with mean = 4.9 and standard deviation = 4 shape unknown with mean = 4.9 and standard deviation = 0.4 approximately normal with mean = 4.9 and standard deviation = 4
Added by Kelsey S.
Step 1
So, the mean of the sampling distribution is 4.9. Second, the standard deviation of the sampling distribution of the sample mean (also known as the standard error) is equal to the population standard deviation divided by the square root of the sample size. So, Show more…
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