Question

The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is 1200 and the standard deviation is60. What is the approximate percentage of prices that fall within one standard deviation of the mean?

Answer 1

Answer: 68%

Explanation:

It would be 68% as we are talking about normal distribution. In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean. I know this because of the empirical rule which specifies how much of the data falls within each standard deviation. Empirical Rule: 68%, 95%,99,7%. 68% of the data falls within one sd(standard deviation). 95% of the data falls within two sd, and 99.7% of the data falls within three sd.