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QUIZ

11th

grade

73%

accuracy

314

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Shellee Wadsworth

4 years

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10 questions

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- 1. Multiple Choice2 minutes1 pt
Given a mean of 75 and a standard deviation of 7, what percentage of scores are between 75 and 82?

68%

81.5%

16%

34%

- 2. Multiple Choice2 minutes1 pt
The average weight of a newborn is 7.5 pounds, with a standard deviation of 1.25 pounds. Birth weight follows the standard normal curve. What percent of newborns weigh 5 pounds or less at birth?

2.35%

0.15%

2.5%

50%

- 3. Multiple Choice30 seconds1 ptWhat shape is a normal distribution curve?Half curveRound curveBell curveSquare curve
- 4. Multiple Choice5 minutes1 ptThe normal curve is symmetrical about the mean.TrueFalse
- 5. Multiple Choice3 minutes1 ptThe 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% - 6. Multiple Choice30 seconds1 pt
According to the empirical rule, what percentage of data falls within 1 standard deviation of the mean?

25%

68%

95%

99.7%

- 7. Multiple Choice30 seconds1 pt
According to the empirical rule, how much of the data falls within 2 standard deviations of the mean?

25%

68%

95%

99.7%

- 8. Multiple Choice5 minutes1 pt
The area under the normal curve is 1.

True

False

- 9. Multiple Choice30 seconds1 pt
If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

20

15

40

30

- 10. Multiple Choice30 seconds1 pt
If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

40

35

45

50

- Answer choicesTagsAnswer choicesTags
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