<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 45.25pt; TEXT-INDENT: -24pt; LINE-HEIGHT: 20pt; mso-para-margin-left: 1.77gd; mso-char-indent-count: -2.0;"><span style="FONT-FAMILY: 宋体;"><font size="3">假设你有一套<span lang="EN-US">10</span>个企业的<span lang="EN-US">1980-2000</span>年<span lang="EN-US">21</span>年的数据，这些数据包括产品的产出（<span lang="EN-US">Y</span>），劳动力（<span lang="EN-US">X<sub>1</sub></span>）和资金（<span lang="EN-US">X<sub>2</sub></span>）的投入。然后你做了以下的生产函数：<span lang="EN-US"><p></p></span></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p><font size="3"> </font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><font size="3"><span style="mso-tab-count: 4;">              </span>Y<sub>it</sub> = a<span style="mso-spacerun: yes;">  </span>+ b<sub>1</sub> X<sub>1 it<span style="mso-spacerun: yes;">  </span></sub>+<span style="mso-spacerun: yes;">  </span>b<sub>2</sub> X<sub>2 it</sub>+ e<sub>it</sub>
                                <p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><font size="3"><span style="mso-tab-count: 5;">                  </span>i = 1, 2, 3,........, 10<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><font size="3"><span style="mso-tab-count: 5;">                  </span>t = 1, 2, 3,........, 21<p></p></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><p><font size="3"> </font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.25pt; LINE-HEIGHT: 20pt;"><font size="3"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-tab-count: 1;">    </span></span><span style="FONT-FAMILY: 宋体;">在此基础上，你想检验如下几个假设是否成立<span lang="EN-US">, </span>如何检验？<span lang="EN-US"><p></p></span></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><font size="3"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-tab-count: 1;">    </span><span style="mso-tab-count: 1;">    </span><span style="mso-tab-count: 1;">    </span>(a)<span style="mso-spacerun: yes;">  </span></span><span style="FONT-FAMILY: 宋体;">各企业的生产技术效率存在差异；<span lang="EN-US"><p></p></span></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt;"><font size="3"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-tab-count: 2;">       </span><span style="mso-tab-count: 1;">    </span>(b)<span style="mso-spacerun: yes;">  </span></span><span style="FONT-FAMILY: 宋体;">各企业都同时在<span lang="EN-US">1990</span>年采用了新技术，采用新技术提高了生产效率；<span lang="EN-US"><p></p></span></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.25pt; LINE-HEIGHT: 20pt;"><font size="3"><span lang="EN-US" style="FONT-FAMILY: 宋体;"><span style="mso-tab-count: 2;">       </span>(c)<span style="mso-spacerun: yes;">  </span></span><span style="FONT-FAMILY: 宋体;">以上<span lang="EN-US">(a)</span>和<span lang="EN-US">(b)</span>同时成立（或同时检验）。<span lang="EN-US"><p></p></span></span></font></p>