In a standard normal distribution (z-distribution), what pro…
In a standard normal distribution (z-distribution), what proportion of data (area under the curve) are within 2 standard deviations from the mean? Round to 2 decimal places. Hint: excel function for percentile is =norm.dist(x, μ, σ, true) . This function will give you the percentile (area to the left of the score under the curve) Hint 2: Z-distribution has a mean of 0 and standard deviation of 1.
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