The Bureau of Labor Statistics publishes information on the distribution of employment by major industry sector. In December 2013, they also published their predictions for the year 2022. These predictions are shown in the table below.
|Industry Sector||Percent Distribution|
|Goods-producing, excluding agriculture||12.1|
|Non-agriculture self-employed and unpaid family worker||5.8|
|Agriculture, forestry, fishing, and hunting||1.2|
A researcher wants to investigate whether these predictions may already be true and has decided to do a study.
Assuming the appropriate conditions for inference have been met, what type of test and how many degrees of freedom should be used in analyzing the results?