Data for Exercise 6.63

`Social`

A data frame/tibble with 25 observations on one variable

- income
annual income (in dollars) of North Carolina social workers with less than five years experience.

Kitchens, L. J. (2003) *Basic Statistics and Data Analysis*.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

```
SIGN.test(Social$income, md = 27500, alternative = "less")
#>
#> One-sample Sign-Test
#>
#> data: Social$income
#> s = 8, p-value = 0.05388
#> alternative hypothesis: true median is less than 27500
#> 95 percent confidence interval:
#> -Inf 27424.05
#> sample estimates:
#> median of x
#> 26500
#>
#> Achieved and Interpolated Confidence Intervals:
#>
#> Conf.Level L.E.pt U.E.pt
#> Lower Achieved CI 0.9461 -Inf 27400.00
#> Interpolated CI 0.9500 -Inf 27424.05
#> Upper Achieved CI 0.9784 -Inf 27600.00
#>
```