9. What is the probability that a randomly selected elephant will weight at least 8.56 tons? 856 10. What is the probability that a randomly selected elephant will have a weight that is at most 6.42 tons? 642 11. What is the probability that a randomly selected elephant will weigh between 3.21 and 9.63 tons? 321
9. What is the probability that a randomly selected elephant will weight at least 8.56 tons? 856 10. What is the probability that a randomly selected elephant will have a weight that is at most 6.42 tons? 642 11. What is the probability that a randomly selected elephant will weigh between 3.21 and 9.63 tons? 321
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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I need help with 9-11 please
![The Empirical Rule
The average weight of an elephant is 6.42 tons with a standard deviation of 1.07 tons. Use the Empirical Rule
to answer the following questions.
1. What weight is 3 standard deviations below the mean? 3.21
2. What weight is 2 standard deviations below the mean? 4.28
3. What weight is 1 standard deviation below the mean? 5.35
4. What weight is the mean? 6.42
5. What weight is 1 standard deviation above the mean? 7.49
6. What weight is 2 standard deviations above the mean? 8.56
7. What weight is 3 standard deviations above the mean? 9.63
8. Between what two values do 68% of elephants weigh? Between 5.35
and 7.49
9. What is the probability that a randomly selected elephant will weight at least 8.56 tons? 856
10. What is the probability that a randomly selected elephant will have a weight that is at most 6.42 tons?
642
x %
11. What is the probability that a randomly selected elephant will weigh between 3.21 and 9.63 tons?
321
12. Would a weight of 3 tons be an unusual weight for an elephant?
Yes, 3 tons is beyond 3 standard deviation of the mean. • V](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fde67faf4-9c92-4b35-8e34-0aba5f54c024%2F148b001d-508e-411e-8cc5-2c3e9de108ba%2Flgii1g_processed.png&w=3840&q=75)
Transcribed Image Text:The Empirical Rule
The average weight of an elephant is 6.42 tons with a standard deviation of 1.07 tons. Use the Empirical Rule
to answer the following questions.
1. What weight is 3 standard deviations below the mean? 3.21
2. What weight is 2 standard deviations below the mean? 4.28
3. What weight is 1 standard deviation below the mean? 5.35
4. What weight is the mean? 6.42
5. What weight is 1 standard deviation above the mean? 7.49
6. What weight is 2 standard deviations above the mean? 8.56
7. What weight is 3 standard deviations above the mean? 9.63
8. Between what two values do 68% of elephants weigh? Between 5.35
and 7.49
9. What is the probability that a randomly selected elephant will weight at least 8.56 tons? 856
10. What is the probability that a randomly selected elephant will have a weight that is at most 6.42 tons?
642
x %
11. What is the probability that a randomly selected elephant will weigh between 3.21 and 9.63 tons?
321
12. Would a weight of 3 tons be an unusual weight for an elephant?
Yes, 3 tons is beyond 3 standard deviation of the mean. • V
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