NO.PZ2022122601000048
问题如下：
Reed knows that economic growth forecasts are sensitive to the inputs to the Cobb-Douglas production function. He wants to assess the effect of two potential new economic policies on Westria’s future growth path. The newly elected government in Westria has proposed the following policies:
Policy 1: Offer incentives to limit the average number of children per family.
Policy 2: Increase the maximum allowable annual contribution to tax-free retirement accounts.
Determine whether each proposed policy will most likely decrease, have no effect on, or increase the long-run Cobb-Douglas growth projection for Westria. Justify each response with one reason.
选项：
解释：
中文解析：
限制每个家庭平均子女数量的激励措施很可能会限制人口增长，因此从长远来看会降低劳动力投入的增长率(ΔL/L)。在保持所有其他因素不变的情况下，降低劳动力投入的增长率将降低长期增长预测。
提高每年向免税退休帐户供款的上限;
很可能会增加储蓄和投资率，从而提高资本存量的增长率(ΔK/K)。在保持其他因素不变的情况下，提高资本存量的增长率将提高长期增长预测。
可以提高全要素生产率(TFP)由于a)技术水平的提高，或b)税收的减少。在保持其他因素不变的情况下，提高全要素生产率的增长率将提高长期增长预测。
居民把更多的钱放在tax free account里，国家征税少了，从国家层面上说R&D的budget也少了，不会影响到total producticity factor吗？谢谢老师！
