A toy store would like to open a new store in the city of Thousand Oaks, and they would like to know what proportion of households have kids. Out of 400 households sampled, 194 had kids. Based on this, to construct a 99% confidence interval for the true population proportion of Thousand Oaks households with kids, you need to use which one of the following calculators?

• Confidence Interval for a Population Proportion
• Two Independent Proportions Comparison
• Hypothesis Test for a Population Proportion
• Hypothesis Test for a Population Mean Given Statistics
• Two Dependent Sample Means Comparison Given Data
• Hypothesis Test for a Population Mean Given Data
• Chi-Square Test for Goodness of Fit
• Confidence Interval for a Population Mean Given Data
• Two Independent Sample Means Comparison Given Statistics
• One-Way ANOVA
• Chi-Square Test for Independence
• Two Independent Sample Means Comparison Given Data
• Confidence Interval for a Population Mean Given Statistics

1. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. Confidence interval =

• Express the same answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places. < p <

• Express the same answer using the point estimate and margin of error. Give your answers as decimals, to three places.p =