In: Statistics and Probability
What was the age distribution of nurses in Great Britain at the time of Florence Nightingale? Suppose we have the following information. Note: In 1851 there were 25,466 nurses in Great Britain.
Compute the standard deviation σ for ages of nurses shown in the distribution. (Round your answer to two decimal places.)
Age range (yr) | 20-29 | 30-39 | 40-49 | 50-59 | 60-69 | 70-79 | 80+ |
Midpoint x | 24.5 | 34.5 | 44.5 | 54.5 | 64.5 | 74.5 | 84.5 |
Percent of nurses | 5.9% | 9.9% | 19.1% | 29.3% | 25.2% | 8.9% | 1.7% |