soleinovell
New member
- Joined
- May 27, 2013
- Messages
- 3
Hi, I've exhausted every method I know to try and answer this so hopefully someone here can help me.. I need to know what the probability that a student chosen at random out of 100 students will have a reaction time of less than 0.2 seconds.. the mean is 0.2528 and the standard deviation is 0.0412.
I know that I need to find the Z score (which was -1.282) however, I have no idea how to draw the diagrams (bell shape curve) and to find the actual probability of it..
My second question is how do I use binomial probability distribution (Bernoulli trial) to determine out of 20 of the people, what is the probability of one student having a reaction time less than 0.2?
If someone can help me ill be most grateful
I know that I need to find the Z score (which was -1.282) however, I have no idea how to draw the diagrams (bell shape curve) and to find the actual probability of it..
My second question is how do I use binomial probability distribution (Bernoulli trial) to determine out of 20 of the people, what is the probability of one student having a reaction time less than 0.2?
If someone can help me ill be most grateful