Answer:
95%
Step-by-step explanation:
The empirical rule states that if data follows normal distribution then the percentage of observations falls within one, two and three standard deviation around the mean are
i) 68% falls within one standard deviation
ii) 95% falls within two standard deviation
iii) 99.7% falls within three standard deviation.
Hence 95% of the observations will fall within two standard deviations around the mean if the data follows normal distribution.
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Answer:
2b^3
Step-by-step explanation:
All real numbers greater than or equal to -3
He currently has an test score sum of 206. He needs 280 to pass (the average score, 70, multiplied by four different test scores).
280-206=74.
He needs to get a score of 74 to pass.
