The residents of two towns both have a mean income of $30,000. Town A has a standard deviation of $2600 and Town B has a standard deviation of $25,000. 21. For Town A, what interval covers the middle...

Extracted text: The residents of two towns both have a mean income of $30,000. Town A has a standard deviation of $2600 and Town B has a standard deviation of $25,000. 21. For Town A, what interval covers the middle 68% of the incomes? 22. For Town A, what interval covers the middle 95% of the incomes? 23. For Town A, what interval covers the middle 99.7% of the incomes? 24. For Town B, what interval covers the middle 68% of the incomes? 25. For Town B, what interval covers the middle 95% of the incomes? (okay to have a negative value) 26. For Town B, what interval covers the middle 99.7% of incomes? (okay to have a negative value) 27. Draw the normal density curves for both Town A and Town B on the same axis. Label the towns. 28. Which town has the taller normal density curve? 29. Which town has the wider normal density curve? 30. Explain what this says about the difference in the distribution of incomes in the two towns