Question

wait times at a denist's office are typically 21 minutes, with a standard deviation of 2 minutes. What percentage of people should be seen by the doctor between 17 and 25 minutes of this to be considered a normal distribution?

Answer 1

The solution is 95% percent.

Step-by-step explanation:

If the typical number of minutes is 21 and the percent is between 17 and 25, you'd need to find the value of 17 and 25 minus 21, divided by the deviation (2)

We start with: 17 - 21 / 2 = 2.28

Then we go to: 21 - 25 / 2 = 7.72

7.72 - 2.28 = 5.44

100% - 5.44% = 94.58

94.58 averages out to 95%

Therefore, your solution is 95%

(I also just took the test and got it right. Your welcome)