Normal Distribution

Question

the common fruit fly drosophila melanogaster Is the most studied organism in genetic research because it is so small easy to grow and reproduce is rapidly the length of the thorax with the wings and legs attach in a population of male fruit flies is approximately normal with mean 0.800 mm and standard deviation 0.078 mm sketch a normal density curve showing the 68–95–99.7% with a mean of 0.800 mm and a standard deviation of 0.078 mm

Answer 1

To answer your question, I can describe the normal density curve.

See this picture:

https://imgur.com/i53c0bf

This is a random (aka normal) distribution. The red line represents the mean. The orange, blue, and purple lines represent 1, 2, and 3 standard deviations away from the mean.

The 68-95-99.7 rule means that:

1. 68% of the graph's area is within the orange lines (within 1 standard deviation of the mean)
2. 95% of the graph's area is within the blue lines (within 2 standard deviations of the mean)
3. 99.7% of the graph's area is within the purple lines (within 3 standard deviations of the mean)

To sketch the normal curve for your population of fruit flies, you will need to use 0.800 mm to represent the mean on your curve. Then, you will need to subtract / add the standard deviation, which is 0.078 mm for every standard deviation line on your chart.

Hope this helps you complete your question at home!