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

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

Post by answerhappygod »

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=44.2σ=44.2 dollars. You would like to be
98% confident that your estimate is within 3 dollar(s) of average
spending on the birthday parties. How many parents do you have to
sample?
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