Find a 95% Confidence Interval for the Difference Between the Proportions

question 161

Essay

Find a 95% confidence interval for the difference between the proportions of people who prefer cola versus root beer where $\hat { p } _ { \text {cola } }$
= .21, $\hat { p } _ { \text {root beer } }$
= .12,n_cola = 200,n_{root beer} = 150.

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Definitions:

Wage And Price Controls

Rules established by the government that either place a ceiling on wages and prices or limit their rate of increase.

Inflation Adjusted

The process of converting amounts from an original currency to reflect current value, considering the effects of inflation over time.

Hourly Wages

The amount of money paid to an employee for one hour of work, a direct indicator of labor compensation in the job market.

Americans Go Hungry

A social issue referring to the situation where a segment of the population in the United States experiences food insecurity.