In a normal distribution of measurements having a mean of 500 feet and a standard deviation of 50 feet, what percent of the distribution falls between 490 and 520 feet?
This is a normal distribution question with
Since we know that
x1 = 490
x2 = 520
P(490.0 < x < 520.0)=?
This implies that
P(490.0 < x < 520.0) = P(-0.2 < z < 0.4) = 0.2347
PS: you have to refer z score table to find the final
probabilities.
Please hit thumps up if the answer helped you
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