Normal distribution problems: Empirical rule
10:25
Khan AcademySal Khan
Normal distribution problems: Empirical rule
The empirical rule (also called the \"68-95-99.7 rule\") is a guideline for how data is distributed in a normal distribution.\n\nThe rule states that (approximately):\n\n- 68% of the data points will fall within one standard deviation of the mean. \n- 95% of the data points will fall within two standard deviations of the mean. \n- 99.7% of the ...
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SOLVED: On average; indoor cats live to 15 years old with a standard deviation of 2.6 years. Suppose that the distribution is normal. Let X = the age at death of a randomly selected indoor cat. Round answers to 4 decimal places where possibleWhat is the distribution ofX? X N( 152.6b. Find the probability that an indoor cat dies when it is between 16.9 and 19.3 years old: 1834The middle 20% of indoor cats' age of death lies between what two numbers? Low: years High: years
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SOLVED: On average; indoor cats live to 15 years old with a standard deviation of 2.6 years. Suppose that the distribution is normal. Let X = the age at death of a randomly selected indoor cat. Round answers to 4 decimal places where possibleWhat is the distribution ofX? X N( 152.6b. Find the probability that an indoor cat dies when it is between 16.9 and 19.3 years old: 1834The middle 20% of indoor cats' age of death lies between what two numbers? Low: years High: years
SOLVED: On average; indoor cats live to 15 years old with a standar…
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