رد: مهم احصاء
سوال 5
chocolate bar calories the average number of calories in a 1.5-ounce chocolate bar is 225 . suppose that the distribution of calories is approximately normal with standard deviation is 10 . find the probability that a randomly selected chocolate bar will have
a)between 200 and 220 calories
b)less than 200 calories
وبس ...ساعدوووني
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