At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people finished in 13 seconds, 10 people finished in 14 seconds, 21 people finished in 15 seconds, 2 people finished in 16 seconds, and 2 people finished in 17 seconds. What is the probability distribution for the finish times?

Question

jack1 · Answer

nuh uh, sorry, i'm terrible at stats, sorry shay, I still need to learn this  :(

anonymous · Answer

ok thanks anyway

anonymous · Answer

@shiraz14 @sourwing

anonymous · Answer

@Miracrown @Hero @ganeshie8

anonymous · Answer

Are u suppose to just name the type if distribution or find the numbers?

anonymous · Answer

find the numbers

anonymous · Answer

@wolf1728 I need help w/ this too

shiraz14 · Answer

This would be a negatively skewed curve. I don't see what you intend to find (as numbers for this distribution) unless you are looking for something along the lines of 'find the probability that a person (chosen among the 50 people) would finish in less than 15 seconds', etc.

anonymous · Answer

idek i just assumed we were finding numbers

kropot72 · Answer

Let x be the finishing time. Let X be the finishing time of a randomly chosen person:
  x                 P(X = x)
11                  2/50
12                  5/50
13                  8/50
14                    ?
15                     ?
16                     ?
17                     ?
Can you complete the table?

anonymous · Answer

what did you do i'm so confused here

kropot72 · Answer

The sample of people was 50. We are given that 2 people finished in 11 seconds, therefore the probability of a randomly chosen person finishing in 11 seconds is 2/50.

anonymous · Answer

ok thanks

kropot72 · Answer

You're welcome :)