5:51 PM: John Beck(Ins) has entered the room.
5:52 PM: Margaret Cannella has entered the room.
5:53 PM: John Beck(Ins): Hi, Margaret!
5:53 PM: Margaret Cannella: HELLO!
5:53 PM: John Beck(Ins): Is it a little chilly back there?
5:54 PM: Margaret Cannella: YES IT IS!!
5:54 PM: John Beck(Ins): Hmmm. Sounds a little colder than chilly.
5:54 PM: Toyia Haines has entered the room.
5:54 PM: John Beck(Ins): Hi, Toyia!
5:55 PM: Toyia Haines: Hi professor Beck
5:55 PM: James Foudos has entered the room.
5:55 PM: John Beck(Ins): Hi, James!
5:55 PM: James Foudos: hello.
5:55 PM: Toyia Haines: Chapter 4 is much easier than Chapter 3
5:55 PM: James Foudos has left the room.
5:55 PM: John Beck(Ins): Yep!
5:56 PM: Toyia Haines: I am back on track. lol
5:56 PM: John Beck(Ins): Sounds like a winner to me.
5:56 PM: James Foudos has entered the room.
5:56 PM: John Beck(Ins): Hi again, James.
5:56 PM: James Foudos: I'll try that again.
5:56 PM: James Foudos: Hello again.
5:57 PM: Sarah Brown has entered the room.
5:57 PM: John Beck(Ins): Hi, Sarah!
5:57 PM: Rachel Kruger has entered the room.
5:57 PM: John Beck(Ins): Hi, Rachel!
5:57 PM: Sarah Brown: Hi
5:57 PM: Rachel Kruger: hi
5:57 PM: Sarah Brown: If we have questions about the homework, may we ask you after our chat tonight?
5:58 PM: John Beck(Ins): Yes.
5:58 PM: Sarah Brown: Thank you!
5:58 PM: Salina Wiggins has entered the room.
5:59 PM: John Beck(Ins): Hi, Salina!
5:59 PM: Salina Wiggins: hey professor beck
5:59 PM: Danielle Ryan has entered the room.
5:59 PM: Andrea Scurti has entered the room.
5:59 PM: John Beck(Ins): Hi, Dani!
5:59 PM: John Beck(Ins): Hi, Andrea!
6:00 PM: Danielle Ryan: Hello!
6:00 PM: Andrea Scurti has left the room.
6:00 PM: Andrea Scurti has entered the room.
6:00 PM: John Beck(Ins): Hi again, Andrea!
6:00 PM: Andrea Scurti: hello!
6:01 PM: John Beck(Ins): Well, Sarah wants to ask some questions about the homework after class, so let's get started.
6:01 PM: John Beck(Ins): Let me know when you are on Ch 5_p1, please.
6:01 PM: Sarah Brown: got it
6:01 PM: Andrea Scurti: ok
6:01 PM: James Foudos: ok
6:01 PM: Rachel Kruger: ok
6:01 PM: Danielle Ryan: I'm there.
6:02 PM: Margaret Cannella has left the room.
6:02 PM: Salina Wiggins: ok
6:02 PM: John Beck(Ins): For the past 4 weeks we've been learning how to count possible outcomes.
6:02 PM: Toyia Haines: ok
6:02 PM: John Beck(Ins): For the next 3 weeks we'll put those counting tools to work for us.
6:03 PM: John Beck(Ins): Go to page 2, please.
6:03 PM: Margaret Cannella has entered the room.
6:03 PM: John Beck(Ins): Hi again, Margaret. we're on Ch 5_p2.
6:03 PM: Margaret Cannella: OK COOL THANKS
6:03 PM: John Beck(Ins): P(2 heads) is read, "What is the probability of tossing 2 heads."
6:04 PM: John Beck(Ins): The definition of P(2 heads) is the ratio of the total favorable outcomes to the total possible outcomes.
6:04 PM: John Beck(Ins): In the top (numerator) we'll have the total number of outcomes consistent with 2 heads.
6:05 PM: John Beck(Ins): In the bottom (denominator) we'll have the total number of possible outcomes when we toss two fair coins.
6:05 PM: John Beck(Ins): Go to page 3, please.
6:05 PM: John Beck(Ins): Love those tree diagrams!
6:05 PM: John Beck(Ins): Go to page 4, please.
6:05 PM: John Beck(Ins): Only one of those outcomes is 2 heads.
6:06 PM: John Beck(Ins): Go to page 5, please.
6:06 PM: John Beck(Ins): There are a total of 4 possible outcomes.
6:06 PM: John Beck(Ins): So P(2 heads) = 1/2 or we could write that as P(2 heads) = .5
6:06 PM: John Beck(Ins): Oops, P(2 heads( = 1/4)
6:07 PM: John Beck(Ins): Or P(2 heads) = .25
6:07 PM: John Beck(Ins): Go to page 6, please.
6:07 PM: John Beck(Ins): P(1 head) is read, "What is the probability of tossing 1 head."
6:07 PM: John Beck(Ins): Go to page 7, please.
6:08 PM: John Beck(Ins): ht and th are outcomes consistent with 1 head.
6:08 PM: John Beck(Ins): Go to page 8, please.
6:08 PM: John Beck(Ins): Still only 4 possible outcomes.
6:08 PM: John Beck(Ins): Go to page 9, please.
6:08 PM: John Beck(Ins): ALWAYS simplify your fractions.
6:08 PM: John Beck(Ins): Go to page 10, please.
6:09 PM: John Beck(Ins): Go to page 11, please.
6:09 PM: John Beck(Ins): When you add the probabilities of all the possible outcomes of an experiment the sum will always be 1.
6:09 PM: John Beck(Ins): Okay, let's click on Tools, then Definitions, please.
6:10 PM: John Beck(Ins): We're going to be using combinations and permutations so those definitions are at the top of he page.
6:10 PM: John Beck(Ins): P(A) is read, "what is the probability of event A?"
6:11 PM: John Beck(Ins): On the next line we see that P(A) will be some number between 0 and 1, inclusive.
6:11 PM: John Beck(Ins): Can't be smaller than zero.
6:11 PM: John Beck(Ins): Can't be greater than 1.
6:12 PM: John Beck(Ins): The probability of the impossible event is 0
6:12 PM: John Beck(Ins): For the experiment of tossing 2 heads, P(3 heads) = 0
6:12 PM: John Beck(Ins): 3 heads is the impossible event.
6:12 PM: John Beck(Ins): P(S) is the "probability of all the possible outcomes of the experiment.
6:13 PM: John Beck(Ins): Notice that that sum will be 1.
6:13 PM: John Beck(Ins): Okay, let's click on Hide 'em please.
6:13 PM: John Beck(Ins): By the way, when you take the online tests in the testing center there will be a "tools" and Definitions tab.
6:14 PM: John Beck(Ins): Go to page 12, please.
6:14 PM: John Beck(Ins): I smell a "product table" coming up!
6:14 PM: John Beck(Ins): Go to page 13, please.
6:14 PM: John Beck(Ins): Go to page 14, please.
6:15 PM: John Beck(Ins): 2 appears only 1 time in the interior of the table.
6:15 PM: John Beck(Ins): Go to page 15, please.
6:15 PM: John Beck(Ins): There are 16 possible outcomes.
6:15 PM: John Beck(Ins): Easy stuff!
6:15 PM: John Beck(Ins): Go to page 16, please.
6:15 PM: John Beck(Ins): It's just a matter of reading the
6:16 PM: John Beck(Ins): interior of the table.
6:16 PM: John Beck(Ins): Go to page 17, please.
6:16 PM: John Beck(Ins): Always simplify your fractions!
6:16 PM: John Beck(Ins): Go to page 18, please.
6:16 PM: John Beck(Ins): There are no nines. P(9) is the impossible event.
6:17 PM: John Beck(Ins): with me so far?
6:17 PM: Andrea Scurti: yes
6:17 PM: Sarah Brown: think so
6:17 PM: Danielle Ryan: yes
6:17 PM: James Foudos: yup
6:17 PM: Salina Wiggins: yeah
6:17 PM: Rachel Kruger: got it
6:17 PM: John Beck(Ins): Go to page 20, please.
6:18 PM: John Beck(Ins): There's the definition of probablity of an event again.
6:18 PM: John Beck(Ins): Go to page 21, please.
6:18 PM: John Beck(Ins): Yes, we need to break our problem down into a series of tasks.
6:18 PM: John Beck(Ins): Any questions on any of those outcomes?
6:19 PM: Salina Wiggins: no
6:19 PM: James Foudos: nope
6:19 PM: Sarah Brown: I don't understand what blocks of seats means?
6:19 PM: John Beck(Ins): wwmm or mwwm or mmww
6:19 PM: Sarah Brown: AH, thanks
6:19 PM: Danielle Ryan: got it.
6:19 PM: John Beck(Ins): Go to page 22,please.
6:20 PM: John Beck(Ins): Go to page 23, please.
6:20 PM: John Beck(Ins): Go to page 24, please.
6:21 PM: John Beck(Ins): As you can see, Class, you're going to get to go back through most of the problems you worked in the first 4 chapters and determine probabilities.
6:21 PM: John Beck(Ins): Some are easy and some are hard.
6:21 PM: John Beck(Ins): But all of them should be familiar.
6:21 PM: John Beck(Ins): Any questions about the chat session?
6:21 PM: Toyia Haines: when is are the chat's available for printing?
6:22 PM: John Beck(Ins): Tomorrow morning, Toyia.
6:22 PM: Toyia Haines: Thanks
6:22 PM: John Beck(Ins): If there are no questions about the chat session, are there any other questions
6:23 PM: John Beck(Ins): ?
6:23 PM: Sarah Brown: I had a question about number 4 from out homework
6:23 PM: John Beck(Ins): Okay, let me look at it.
6:23 PM: Danielle Ryan: no, I am good
6:23 PM: Toyia Haines: will the calculator and definitions be available for the tests?
6:24 PM: John Beck(Ins): They'll be at the top of the test just like you see them in all of the lectures and in the chat sessions.
6:24 PM: Toyia Haines: ok, great
6:24 PM: John Beck(Ins): Ok, I have 4 up on my screen.
6:24 PM: John Beck(Ins): What is your question, Sarah?
6:25 PM: Sarah Brown: I was going over the practice problem and I am not sure how to work out the equation for the homework problem. I get confused when we start using decks of cards
6:25 PM: Toyia Haines: Me too, i don't know anything about cards
6:25 PM: Sarah Brown: I don't know what numbers to plug in
6:26 PM: John Beck(Ins): If you don't have a deck of cards, it might be a good idea to buy a cheap deck just so you can see what they look like. Then try to go through the problems with the real thing.
6:26 PM: John Beck(Ins): Okay, if I want a poker hand with no clubs, I'd put all of the cards into 2 piles.
6:26 PM: John Beck(Ins): One pile would have 13 clubs.
6:26 PM: Sarah Brown: right
6:26 PM: John Beck(Ins): The other pile would have 39 non-clubs.
6:27 PM: Sarah Brown: ok
6:27 PM: John Beck(Ins): I need to pick 5 cards and I don't want to have any clubs, so which pile should I take my cards from?
6:27 PM: Sarah Brown: 39
6:27 PM: John Beck(Ins): Yes, and how many will I pick?
6:27 PM: Sarah Brown: 5
6:27 PM: John Beck(Ins): Do I care about order?
6:28 PM: Sarah Brown: i don't think so
6:28 PM: John Beck(Ins): Right!
6:28 PM: John Beck(Ins): Now let's look at 4b.
6:28 PM: Sarah Brown: so would that be C(39,5)
6:28 PM: John Beck(Ins): Sounds pretty good to me.
6:29 PM: James Foudos has left the room.
6:29 PM: John Beck(Ins): Which pile will you select your cards from in 4b?
6:29 PM: Sarah Brown: Sorry, wasn't trying to get the answers before we turned in homework.
6:29 PM: Toyia Haines: the 13 clubs?
6:29 PM: John Beck(Ins): Not a problem.
6:29 PM: John Beck(Ins): Yes, Toyia.
6:30 PM: John Beck(Ins): And how many of those 13 cards will I choose?
6:30 PM: Sarah Brown: and we want 5 clubs right?
6:30 PM: John Beck(Ins): RIGHT
6:30 PM: John Beck(Ins): Do we care about order?
6:30 PM: Sarah Brown: no
6:30 PM: John Beck(Ins): Piece of cake!
6:30 PM: Sarah Brown: much easier to understand when you explain. Thanks!
6:31 PM: John Beck(Ins): You're welcome.
6:31 PM: Danielle Ryan has left the room.
6:31 PM: John Beck(Ins): Any other questions?
6:31 PM: Sarah Brown: that was it.
6:31 PM: Salina Wiggins: i have a question. how do you locate a testing center on campus?
6:31 PM: Toyia Haines: I think I have it
6:31 PM: John Beck(Ins): Which campus, Salina?
6:31 PM: Andrea Scurti: no thanks, goodnite!
6:31 PM: Salina Wiggins: essex
6:31 PM: Andrea Scurti has left the room.
6:31 PM: John Beck(Ins): It's in the building that has the library and the counseling center.
6:32 PM: Toyia Haines: I think it's bldg A
6:32 PM: Salina Wiggins: ok thanks
6:32 PM: John Beck(Ins): I think there might be a map of the buildings on ccbcmd.edu website.
6:32 PM: Toyia Haines has left the room.
6:33 PM: John Beck(Ins): Have any of you taken the practice test on my website?
6:33 PM: Salina Wiggins: is it timed
6:33 PM: Sarah Brown: not yet
6:33 PM: John Beck(Ins): 2 hours, Salina.
6:33 PM: Salina Wiggins: no not yet
6:33 PM: John Beck(Ins): Be sure to take the online practice test!!!!!!!!!!!!!!!!!!!!!
6:33 PM: Sarah Brown: how many questions is the exam?
6:34 PM: John Beck(Ins): I think there are 25, but don't hold me to that. It might be 24 or 26.
6:34 PM: Rachel Kruger: I think Mr Beck is trying to tell us the online practice test is very much like the real test!!!!!!! thanks Mr Beck....goodnight
6:34 PM: John Beck(Ins): RIGHT
6:34 PM: Salina Wiggins: ok thanks professor beck! goodnight
6:34 PM: John Beck(Ins): G'night, Class. Email me if you have questions.
6:35 PM: Sarah Brown: Thanks for the extra help. Turning homework in soon! Good night
6:35 PM: John Beck(Ins): Yes, it's www.mathsoftware.com/walkthru.html
6:35 PM: Sarah Brown has left the room.
6:35 PM: Margaret Cannella: thanks!!
6:35 PM: Margaret Cannella has left the room.
6:35 PM: Salina Wiggins has left the room.
6:35 PM: John Beck(Ins) has left the room.
6:36 PM: Rachel Kruger has left the room.