1. An independent researcher wishes to estimate the average amount of money a young professional spends in clothing each month. A sample of 30 young professional who spend in clothing found the mean to be Php 500 and the standard deviation to be Php 60. Find 95% confidence interval of the population mean.

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A: X Y 62 120 62 140 63 130 65 150 66 142 67 130 68 135 68 175 70 149 72 168…