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In a box that contains 30 cards each with a number. The Ave is 33 and the SD is 4. If the confidence level is 95.5% then what is the confidence interval. confidence interval is between 29 and 37 confidence interval is between 25 and 41 confidence interval is between 27 and 39 confidence interval is between 30 and 36 confidence interval is between 23 and 43

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Carlos Rodriguez <carlos@math.albany.edu>

This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998