We have a normal population of scores, with ? = 55 and ? = 17. If...

We have a normal population of scores, with ? = 55 and ? = 17. If we select a random sample of 100 participants and obtain a mean of 57, is that a typical mean value for this distribution based on the values that cutoff the middle 95%?

Expert Solution

So, the middle 95% of sample mean values = (51.67, 58.33)

Since 57 lies within the interval,so we can say that the 57 is a typical mean value for this distribution based on the values that cutoff the middle 95%.

orchestra answered 1 year ago

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