Does Internet usage vary with age? An Internet Service Provider took a random sample of its customers, recording their age and classifying their usage as high, moderate or low. Under 30 years 30-49 years 50+ years Total Low usage 35 31 29 95 Moderate usage 96 90 46 232 High usage 74 49 24 147 Total 205 170 99 474 (a) What percent of low usage customers were 50 years or older? % (Enter as a percentage, to 1 decimal.) (b) What percent of customers under 30 years had moderate or high Internet usage? % (c) What percent of high usage customers were under 50 years of age? %
Does Internet usage vary with age? An Internet Service Provider took a random sample of its customers, recording their age and classifying their usage as high, moderate or low. Under 30 years 30-49 years 50+ years Total Low usage 35 31 29 95 Moderate usage 96 90 46 232 High usage 74 49 24 147 Total 205 170 99 474 (a) What percent of low usage customers were 50 years or older? % (Enter as a percentage, to 1 decimal.) (b) What percent of customers under 30 years had moderate or high Internet usage? % (c) What percent of high usage customers were under 50 years of age? %
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Does Internet usage vary with age? An Internet Service Provider took a random sample of its customers, recording their age and classifying their usage as high, moderate or low.
| Under 30 years | 30-49 years | 50+ years | Total | |
|---|---|---|---|---|
| Low usage | 35 | 31 | 29 | 95 |
| Moderate usage | 96 | 90 | 46 | 232 |
| High usage | 74 | 49 | 24 | 147 |
| Total | 205 | 170 | 99 | 474 |
(a) What percent of low usage customers were 50 years or older? % (Enter as a percentage, to 1 decimal.)
(b) What percent of customers under 30 years had moderate or high Internet usage? %
(c) What percent of high usage customers were under 50 years of age? %
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