11.9 The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken to calculate the number of U.S. citizens working in one of several industry sectors over time. Table 11.16 shows the results: Industry Sector Nonagriculture wage and salary Goods-producing, excluding agriculture Services-providing Agriculture, forestry, fishing, and hunting Nonagriculture self-employed and unpaid family worker Secondary wage and salary jobs in agriculture and private household industries Secondary jobs as a self-employed or unpaid family worker Total Table 11.16 2000 2010 2020 Total 13,243 13,044 15,018 41,305 2,457 1,771 1,950 6,178 10,786 11,273 13,068 35,127 240 214 201 655 931 894 972 2,797 14 36 196 144 152 492 27,867 27,351 31,372 86,590 11 11 We want to know if the change in the number of jobs is independent of the change in years. State the null and alternative hypotheses and the degrees of freedom.
The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken to calculate the number of U.S. citizens working in one of several industry sectors over time. Table 11.16 shows the results:
Industry Sector 2000 2010 2020 Total
Nonagriculture wage and salary 13,243 13,044 15,018 41,305
Goods-producing, excluding agriculture 2,457 1,771 1,950 6,178
Services-providing 10,786 11,273 13,068 35,127
Agriculture, forestry, fishing, and hunting 240 214 201 655
Nonagriculture self-employed and unpaid family worker 931 894 972 2,797
Secondary wage and salary jobs in agriculture and private household
industries 14 11 11 36
Secondary jobs as a self-employed or unpaid family worker 196 144 152 492
Total 27,867 27,351 31,372 86,590
Table 11.16
We want to know if the change in the number of jobs is independent of the change in years. State the null and alternative hypotheses and the degrees of freedom.
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