Heather and her lab partners were trying to find the probability that the weight of a US quarter is below one standard deviation
from the mean. They know that the weight of a quarter follows the normal distribution. What was their answer?
1 answer:
Answer:
16%
Step-by-step explanation:
The Empirical rule says that 68% of a normal distribution lies between -1 and +1 standard deviations.
That means that 32% lies outside of ±1 standard deviations.
Since the normal curve is symmetrical, that means 16% is less than -1 standard deviation and 16% is greater than +1 standard deviation.
So the answer is 16%.
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Step-by-step explanation:
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17. 2x<16 x=7 or lower
All I can help you with is #17,
sorry that I can't answer the other 3.
I hope this helped! :-)
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Answer:
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Step-by-step explanation: