Latita had 12 marbles. she gave 2 marbles to her friend she has 10/12 of her marbles left write answer in simplest form
1 answer:
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Answer:
x=20
Step-by-step explanation:
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The empirical rule says that approximately 68% of any normal distributed data set lies within one standard deviation of the mean.
The same rule states that about 95% lies within two standard deviations of the mean. Using this rule, and the fact that any normal distribution is symmetric about its mean, you have