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Previous You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the

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Previous 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 o = 75.5 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 moms do you have to sample? Do not round mid-calculation. n = Try this with your statistics calculator, if you decreases the confidence level, the sample size O increases O decreases se If you increases the error bound, the sample size O increases O decreases

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