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 σ=35.5σ=35.5 dollars. You would like to be 90% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=49.5σ=49.5 dollars. You would like to be 90% confident that your estimate is within 5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=53.4σ=53.4 dollars. You would like to be 98% confident that your estimate is within 2.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=80.6σ=80.6 dollars. You would like to be 98% confident that your estimate is within 1 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=44.1σ=44.1 dollars. You would like to be 99% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=35.3σ=35.3 dollars. You would like to be 90% confident that your estimate is within 1 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=71.3σ=71.3 dollars. You would like to be 95% confident that your estimate is within 1 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=44.7σ=44.7 dollars. You would like to be 98% confident that your estimate is within 1.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?

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 σ=63.3σ=63.3 dollars. You would like to be 95% confident that your estimate is within 2.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? n=

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 σ=57.4σ=57.4 dollars. You would like to be 99% confident that your estimate is within 1.5 dollar(s) of average spending on the birthday parties. How many moms do you have to sample? Do not round mid-calculation.n =