You have collected data about the average response time of participants in your study. You are delighted to find that the variable is normally distributed. The mean response time is 30 seconds and the standard deviation is 4 seconds what percent of your subjects would you expect to respond in 26-34 seconds?
A) 50%
B) 68%
C) 95%
D) Unable to determine

Question

Quizplus · Accepted Answer

In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean. Here, 26 to 34 seconds is within one standard deviation (mean ± 4 seconds) of the mean (30 seconds).

You Have Collected Data About the Average Response Time of Participants