The average labor charge for automobile mechanics is $54 per hour. The standard deviation is minimum percentage of data values that will fall within the range of $48 to $60. Use $4. Find the Chebyshev's theorem.

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# Statistical Analysis Problems

### Problem 7

The average labor charge for automobile mechanics is $54 per hour. The standard deviation is $4. Determine the minimum percentage of data values that will fall within the range of $48 to $60. Use Chebyshev's theorem.

### Problem 8

In a certain year, the average national ISAT score was 1019. Assuming a bell-shaped distribution and a standard deviation equal to 110:

- What percentage of scores will you expect to fall above 1129?
- What percentage will be above 799?

---

These problems involve using statistical concepts such as Chebyshev's theorem and properties of the bell-shaped (normal) distribution. Each question requires application of theoretical principles to determine percentages of data in specific ranges.
Transcribed Image Text:# Statistical Analysis Problems ### Problem 7 The average labor charge for automobile mechanics is $54 per hour. The standard deviation is $4. Determine the minimum percentage of data values that will fall within the range of $48 to $60. Use Chebyshev's theorem. ### Problem 8 In a certain year, the average national ISAT score was 1019. Assuming a bell-shaped distribution and a standard deviation equal to 110: - What percentage of scores will you expect to fall above 1129? - What percentage will be above 799? --- These problems involve using statistical concepts such as Chebyshev's theorem and properties of the bell-shaped (normal) distribution. Each question requires application of theoretical principles to determine percentages of data in specific ranges.
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