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Mathematics
9th -
12thgrade
Normal Distributions: Finding Probabilities (5.2)
10 questions
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- 1. Multiple ChoiceWhat shape is a normal distribution curve?Half curveRound curveBell curveSquare curve
- 2. Multiple ChoiceAccording to the empirical rule, what percentage of data falls within 1 standard deviation?25%68%95%99.7%
- 3. Multiple ChoiceAccording to the empirical rule, how much of the data falls within 3 standard deviations?25%68%95%99.7%
- 4. Multiple ChoiceThe mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?0.69150.17620.8238-0.93
- 5. Multiple ChoiceThe average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch. If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?92.4%10.5%16%7.6%
- 6. Multiple ChoiceThe mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have more than 7 accidents?0.34460.28560.40.6554
- 7. Multiple ChoiceThe mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8?81.5%47.5%68%95%
- 8. Multiple ChoiceBetween what two standard deviations of a normal distribution contain 68% of the data?one below and one abovetwo below and two abovetwo below and zerozero and two above
- 9. Multiple Choice
The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch.
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?
92.4%
10.5%
16%
7.6%
- 10. Multiple ChoiceThe shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.
About what percent of the products last between 12 and 15 days?68%34%16%2.5% - Answer choicesTagsAnswer choicesTags