Refer to the information provided in Figure 29.1 below to answer the question(s) that follow. 
Figure 29.1
-Refer to Figure 29.1. If policy makers take an action at time t4, the impact on the economy will not be at time t4 because
Definitions:
Population Proportion
Population Proportion is a measure that represents the fraction or percentage of individuals in a population who exhibit a particular trait or characteristic.
Significance Level
A threshold in hypothesis testing that determines the probability of rejecting a true null hypothesis, typically set at 0.05 or 0.01.
Sinus Drug
A medication specifically designed to treat symptoms associated with sinus problems, such as congestion and pain.
Degrees of Freedom
In statistics, it refers to the number of independent values or quantities which can be assigned to a statistical distribution.
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