Tom used a photocopier to dilate the design for a monorail track system. The figure shows the design and its photocopy:
2 answers:
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Answer:
h. 36
Step-by-step explanation:
For a 68.26% confidence, z = 1.0.
Standard deviation (s) = 30 minutes
The sample size needed to assure that the sample mean does not differ from the true mean by more than 5 minutes is given by:
The sample size needed is 36.