Answer:
68% of buyers paid between 150,000 and 153,200
Explanation:
The Empirical Rule(68-95-99.7 rule) states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Standard deviation = 1,600
I suppose there was a typing mistake and the mean was not given, but a mean of 150,000 + 1,600 = 151,600 would make sense.
Percentage of buyers who payed between 150,000 and 153,200
150,000 = 151,600 - 1,600
So 150,000 is one standard deviation below the mean
153,200 = 151,600 + 1,600
So 153,200 is one standard deviation above the mean.
By teh Empirical Rule, 68% of buyers paid between 150,000 and 153,200