Question

The population mean and standard deviation are given below. Find the required probability and determine whether...

The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual.

For a sample of n=65, find the probability of a sample mean being greater than 224 if u-223 and sd =5.5 is ? (round to 4 decimal places)

Would the given sample be unusual?

The sample mean (would/would not) be considered unusual because it (lies / does not lie) within the range of an unusual event namely with in (how many standard deviation) of the mean of the sample means.

What steps do I use on the TI84 to calculate this problem?

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