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The number of potato chips in a bag is normally distributed with a mean of 74 and a standard deviation of 4. Approximately what percent of bags contain between 62 and 86 potato chips?
choices below
Approximately 68%
Approximately 74%
Approximately 95%
Approximately 99.7%

Sagot :

Answer:

99.7%

Step-by-step explanation:

62   is   3  SD below the mean  and   86 is  3 SD above the mean

  6 SD covers approx 99.7 %