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Let's figure out the average amount of tuition a dancer pays at Shockwave Dance Company. We...

Let's figure out the average amount of tuition a dancer pays at Shockwave Dance Company. We would like to know exactly how many people we need to survey in order to be 95% confident that we are within $133 dollars of the mean. If the population standard deviation is $530.  How many people do we need to survey for $5?

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Answer #1

Sample size = ( Z/2 * / E)2

= ( 1.96 * 530 / 133)2

= 61.004

Sample size = 62 (Rounded up to nearest integer)

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