Question 1178778
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On  the "68  -  95  -  99.7 rule" learn from these web-sites


https://towardsdatascience.com/understanding-the-68-95-99-7-rule-for-a-normal-distribution-b7b7cbf760c2


https://en.wikipedia.org/wiki/68%E2%80%9395%E2%80%9399.7_rule



and then use your knowledge.