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Description
Week 5: Normal Distribution
| Week | Assignments | Due Date |
| Week 5 | Graded Discussion | Suggested Due Date—
Initial Post: Wednesday of Week 5
Due Date— Responses: Sunday of Week 5 [Have two posts on two different days] |
| Knewton Homework Assignments
Understanding Normal Distribution Applications of the Normal Distribution – Excel Central Limit Theorem for Means Central Limit Theorem for Proportions Probability Using the Normal Distribution Understanding the Empirical Rule |
Sunday of Week 5 |
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Week 5 Assignment – Understanding the Empirical Rule
Activity 1
Question
A random sample of SAT scores has a sample mean of x¯=1060 and sample standard deviation of s=195. Use the Empirical Rule to estimate the approximate percentage of SAT scores that are less than 865.
Round your answer to the nearest whole number (percent).
Provide your answer below:
Answer
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Activity 2
Question
A random sample of CO2 levels in a school has a sample mean of x¯=598.4 ppm and sample standard deviation of s=86.7 ppm. Use the Empirical Rule to determine the approximate percentage of CO2 levels that lie between 338.3 and 858.5 ppm.
Answer
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Activity 3
Question
A random sample of small business stock prices has a sample mean of x¯=$54.82 and sample standard deviation of s=$8.95. Use the Empirical Rule to estimate the percentage of small business stock prices that are more than $81.67.
Answer
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Activity 4
Question
A random sample of vehicle mileage expectancies has a sample mean of x¯=169,200 miles and sample standard deviation of s=19,400 miles. Use the Empirical Rule to estimate the percentage of vehicle mileage expectancies that are more than 188,600 miles.
Answer
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Activity 5
Question
A random sample of hybrid vehicle fuel consumptions has a sample mean of x¯=53.2 mpg and sample standard deviation of s=4.8 mpg. Use the Empirical Rule to estimate the percentage of hybrid vehicle fuel consumptions that are less than 43.6 mpg.
Answer
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