STA 2023 (STA2023)
University Of Florida
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STA 2023 QUIZ 2
- Exam (elaborations) • 8 pages • 2022
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STA 2023 QUIZ 2. 
Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a 
standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points 
and 94.7 points? 
 
99.7% 
Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, 
there should be 99.7% of the data within three standard deviations away from the mean. 
 
68% 
 
50% 
 
95% 
This is an application of the Empirical Rule...
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STA 2023 QUIZ 2
- Exam (elaborations) • 8 pages • 2022
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- $6.49
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STA 2023 QUIZ 2. 
Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a 
standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points 
and 94.7 points? 
 
99.7% 
Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, 
there should be 99.7% of the data within three standard deviations away from the mean. 
 
68% 
 
50% 
 
95% 
This is an application of the Empirical Rule...
-
STA 2023 QUIZ 2
- Exam (elaborations) • 8 pages • 2021
-
- $8.49
- + learn more
STA 2023 QUIZ 2. Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a 
standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points 
and 94.7 points? 
 
99.7% 
Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, 
there should be 99.7% of the data within three standard deviations away from the mean. 
 
68% 
 
50% 
 
95% 
This is an application of the Empirical Rule....
-
STA 2023 Module 3 Quiz
- Exam (elaborations) • 13 pages • 2021
-
- $9.49
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STA 2023 Module 3 Quiz 
Find the indicated probability. 
An airline knows from experience that the distribution of the number of suitcases that get lost each week 
on a certain route is approximately normal with μ = 15.5 and σ = 3.6. What is the probability that during a 
given week the airline will lose less than 20 suitcases? 
0.3944 
0.1056 
0.8944 
0.4040 
Question 
2 
1 / 1 
point 
Find the indicated area. 
Find the area under the standard normal curve to the right of z = 1. 
0.1587 
0.84...
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