Monthly consumption of electricity X (in KWH, in a winter month) by the households in a county has a normal distribution with mean 875 KWH and standard deviation 155 KWH. What proportions of households consumes less than 1000 KWH?
Added by David S.
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Step 1: Calculate the z-score using the formula: \( z = \frac{X - \mu}{\sigma} \), where \( X = 1000 \), \( \mu = 875 \), and \( \sigma = 155 \). Show more…
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Monthly consumption of electricity X (in KWH, in a winter month) by the households in a county has a normal distribution with mean 875 KWH and standard deviation 155 KWH. What proportions of households consumes less than 1000 KW
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