Identify values for Binom Dist prob

Jadelady50 · 11-02-2009, 05:01 PM

This is my problem;
A city law enforcement official has stated that 20% of the items sold by pawn shops within the city have been stolen. Ralph has just purchased 4 items from one of the pawn shops. Assuming the city official is correct, and for x=the number of Ralph’s purchases that have been stolen, determine the following;

P (x=0)

P (2≤0)

P (1≤x≤3)

P (x≤3)

If I have reasoned this out, I have a probability of success of 20% and my number of trials is 4. I have been reading and rereading so long, I have completely confused myself. Any help is greatly appreciated!

allinorfold · 11-02-2009, 05:40 PM

Yes, you're correct.
Success=stolen is the part that confused you I'm guessing?

Also part 2) needs correction.

11-02-2009, 05:01 PM	#1
Jadelady50 Junior Member Join Date: Nov 2009 Location: Ft Lauderdale Posts: 1 Thanks: 1 Thanked 0 Times in 0 Posts	Identify values for Binom Dist prob This is my problem; A city law enforcement official has stated that 20% of the items sold by pawn shops within the city have been stolen. Ralph has just purchased 4 items from one of the pawn shops. Assuming the city official is correct, and for x=the number of Ralph’s purchases that have been stolen, determine the following; P (x=0) P (2≤0) P (1≤x≤3) P (x≤3) If I have reasoned this out, I have a probability of success of 20% and my number of trials is 4. I have been reading and rereading so long, I have completely confused myself. Any help is greatly appreciated!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-02-2009, 05:40 PM	#2
allinorfold Junior Member Join Date: Oct 2009 Posts: 18 Thanks: 1 Thanked 1 Time in 1 Post	Yes, you're correct. Success=stolen is the part that confused you I'm guessing? Also part 2) needs correction.