• Support PF! Buy your school textbooks, materials and every day products Here!

Determine the probability that a random variable

  • Thread starter Sirsh
  • Start date
  • Tags
    casio
  • #1
267
10
Hello my question is stated below:

Task 3: Determine the probability that a random variable (X) having a normal distribution with μ = 20.15 and σ = 6.27 minutes will take on a value less than 9.5.

I've tried this:

Standardised score = (9.6-20.15)/6.27 = -1.698

Now i dont know how to find the pribability of this score on a stats sheet or using my casio classpad. does anyone else know how to do this?

Thank you.
 

Answers and Replies

  • #2
23
0


to do it on your casio classpad you can use the stats program. click on the calc dropdown, all the way at the bottom is distribution, click on that then you want to use normal CD, click next and use your lower value as -infinity then you should be able to figure the rest.
 
  • #3
267
10


Pretty much finished the assignment before you replied lmao.
 

Related Threads for: Determine the probability that a random variable

  • Last Post
Replies
5
Views
955
  • Last Post
Replies
2
Views
453
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
2
Views
2K
Replies
1
Views
2K
Replies
1
Views
3K
Replies
6
Views
964
Top