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A catchment has five rain gauge stations. In a year, the annual rainfalls recorded by the gauges are 78.8 cm, 90.2 cm 98.6 cm, 102.4 cm and 70.4 cm.
written 5.2 years ago by gravatar for teamques10 teamques10 ★ 64k •   modified 4.3 years ago

For a 6% error in the estimation of the mean rainfall, determine the additional number of gauges needed.
water resources engineering
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