A city is holding a referendum on increasing property taxes to pay for a new high school. In a survey of 458 likely voters, 254 said that they would vote “yes” on the referendum. Create a 95% confidence interval for the proportion of likely voters who will vote “yes” on the referendum. Use Excel to create the confidence interval, rounding to four decimal places.

Lower limit for confidence interval=0.5091

Upper limit for confidence interval=0.6001

Step-by-step explanation:

We have given,              

x=254          

n=458          

Estimate for sample proportion=

Level of significance is =1-0.95=0.05      

Z critical value(using Z table)=1.96      

Confidence interval formula is

Lower limit for confidence interval=0.5091

Upper limit for confidence interval=0.6001

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