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The mean monthly rent paid by students is normally distributed. A pilot study of 25 students...

The mean monthly rent paid by students is normally distributed. A pilot study of 25 students was performed to investigate the mean monthly rent. The study costed $125.00 and sampled 25 subjects. Its results indicated that the bound of error of estimation was $30 with a 90% confidence. Assuming that the cost is proportional to the number of students, how much is a full study going to cost to determine the mean monthly rent of students to within $10 with 95% confidence?

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