(Solved): Q38m Twenty-five adult citizens of the United States were asked to estimate the average income of al ...

Twenty-five adult citizens of the United States were asked to estimate the average income of all U.S. houscholds. The mean estimate was \( \bar{x}=\$ 70,000 \) and \( s=\$ 15.000 \). (Note: The actual average household income at the time of the study was about \( \$ 90,000 \).) Assume the 25 adults in the study can be considered an SRS from the population of all adult citizens of the United States. A 95\% confidence interval for the mean estimate of the average income of all U.S. households is \[ \begin{array}{l} \$ 63,808 \text { to } \$ 76,192 \text {. } \\ \$ 83,808 \text { to } \$ 96,192 \text {. } \\ \$ 67,000 \text { to } \$ 73,000 \text {. } \end{array} \]