The percentage of data that lies within 2 standard deviations of the mean in a normal distribution is 95%.
A normal distribution is a probability distribution that is symmetric around the mean of the distribution. This means that the there are more data around the mean than data far from the mean. A normal distribution is also known as the Gaussian distribution. When depicted on a graph, a normal distribution is bell-shaped.
For a normal distribution:
- About 68% of the data lie within one standard deviation of the mean.
- About 95% of the data lie within two standard deviations of the mean.
- About 99.7% of the data lie within three standard deviations of the mean.
Please find attached an image of a normal distribution. A similar question was answered here: brainly.com/question/17101164
1 hour equals 60 minutes.
Divide the minutes by 60 to find the decimal portion of the time:
21 minutes / 60 = 0.35
Now add that to 3 hours to get decimal hours:
3 hours 21 minutes as a decimal would be 3.35 hours
White t-shirts = 8, blue t-shirts =6 6+8=14 24-14=10 orange tshirts