1D 1* 1: 2* Assume that a sample is used to estimate a population proportion ,0. Find the 9533 confidence interval for a sample of size 1153 with 6313 successes. Enter your answer as a tri-linear inequality using decimals [not percents} accurate to three decimal places. |

You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately a = 49.2 dollars. You would like to be 9096 confident that your estimate is within 1.5 dollaris} of average spending on the birthday parties. How many parents do you have to sample? Hint: Video 5' [+1 8