Mathematics
Mathematics, 20.08.2019 14:30, Delgadojacky0206

Give you 300 dollars if u get this right. you have my word the lifetimes of 20,000 light bulbs are normally distributed. the mean lifetime is 230 days. the standard deviation is 40 days. find the values defined by the standard deviation in a normal distribution for 3 standard deviations.

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Give you 300 dollars if u get this right. you have my word the lifetimes of 20,000 light bulbs are n...

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