0 Question 1 v 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 : 53.5 dollars. You would like to be 95% confident that your estimate is within 2 dollar(s) of average spending on the birthday parties. How many moms do you have to sample? Do not round mid-calculation. '1: Try this with your statistics calculator, if you increases the confidence level, the sample size 0 decreases 0 increases If you increases the error bound, the sample size 0 decreases 0 increases Question Help: 8 Message instructor Submit Question 0 Question 2 v lVideo 2 8 Message instructor Submit Question 0 Question 6 v You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 82%. You would like to be 99% confident that your estimate is within 2.5% of the true population proportion. How large of a sample size is required? Hint: Video E [+] Question Help: 8 Message instructor Submit