For this problem, my task is simple. I have to be able to "summarize what key concepts are being explained in the example. I have to summarize what the problem is explaining and the bottom-line concepts described in the problem."

Can you help me summarize what this problem is stating and be able to explain it in basic English? Thank you.

Refer to Example 5.16. Suppose that next week we select a single sample of size 25 from a normal population whose standard deviation is known to be 0' = 2, but whose mean pt. is unknown to us. If 55 = 70 for this sample, then the results in Example 5.16 indicate that 70 is almost certainly no farther than 1.5 units away from the p0pulation mean pi and it is fairly likely that it is within 1 unit of pi. That is, we can infer that the unknown population mean is almost certainly between 68.5 and 71.5, and we can be reasonably condent that it is between 69 and 71. In this way, by using our knowledge of what the sampling distribution of 2? looks like, we can begin to make inferences about the likely values of the unknown population parameter p.