Math help please? on probability?
its not cheating? like i said i have the answers.. i just wasnt there for the class and this is a test prep so i wanna make sure i have it because my grade in math needs a really big band-aid.
Probability? math help!?
1) The probability of a desired outcome is: (number of instances desired outcome appears)/(number of outcomes in sample space). For the coin flipping problem, the sample space is four since the possible outcomes are HH, HT, TH, and TT. Observe that two heads only appears once in the entire sample space. So, the probability of getting two heads is 1/4, not 1/3. 2) a) Look at the possible combinations and then figure the monetary amounts: PP = .02, PN = .06, PD = .11, NN = .10, ND = .15, DD = .20 b) To get the probability of the total being two cents, first figure out the sample space: PP PN NP PD DP NN ND DN DD Observe that only in the instance of PP will the total be two cents. So the probability is 1/9. c) probability of .02 = 1/9 probability of .06 = 2/9 probability of .11 = 2/9 probability of .10 = 1/9 probability of .15 = 2/9 probability of .20 = 1/9 Hope this helps!
Math help...probability?
1)You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. If you pick three burritos at random, find the probability that NONE OF THEM HAVE HOT PEPPERS 2)You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. If you pick three burritos at random, find the probability that AT MOST TWO HAVE HOT PEPPERS. (round your answer to three decimal places)
Probability Math? Help?
How many ways are there to select 4 cards from a standard deck of 52 cards (how many combinations are there)? . Part 2. How many combinations of 4 spades can be pulled from the 13 spades in a standard deck of cards? Part 3. Find the probability of drawing 4 cards from a deck of 52 cards and have all 4 cards be spades. (Remember, probability is the # of desired outcomes divided by the total # of possible outcomes.)
Probability Math Help please?
. I have filled a bag with differently colored ping-pong balls. There are twenty balls in the bag. Twelve are white, six are orange and two are pink. When I draw a ball from the bag, I remove it. What is the probability that my first draw is a white ball and my second is not? 0.240 0.253 0.400 0.421
Probability Math Question, help!?
You have a one out of five chance that the correct letter will be in the first envelope, then you have a 1/4 chance the correct letter will be in the second envelope, and so on... so (1/5) * (1/4) * (1/3) * (1/2) * (1/1) = 1/120
MATH probability HELP test tomorrow!!?
four beads are drawn at random from a box containing 4 black, 4 white, and 2 red beads. What is the probability that the selection will contain exactly 2 black beads or exactly 2 white beads or both. (note that the two events of drawing exactly 2 white beads and of drawing exactly 2black beads are not mutually exclusive) Please explain how you would get the answer The answer is 24/35
Is probability 'real' math?
Probably. Sorry. Lame joke. When you say something is "real math", it brings up the question, what is math? Is math numbers? Is math merely being able to perform computations? Is it being able to perform those computations fast? After all when you say John is good at math. You could mean any of those things, right?But actually it's neither of those things. Math is a language. It's the language that we use to describe and predict the effects of observed phenomena. So, when we say the earth goes around the sun, what we do is describe in mathematical terms how exactly the earth goes around the sun. Just like language, the power of math lies in how well it can express the underlying concepts. An Equation that describes a phenomena succinctly and completely is better than one that doesn't.Now there are some phenomena that are deterministic in nature. For example you roll a ball on a wooden floor. It rolls and comes to a stop. You do the same thing again and the ball does the same thing. That's deterministic behavior. Deterministic math can be used to describe the motion of the ball. Essentially Newton's equations provide exactly the math that describes the motion of the ball.However, certain phenomena are probabilistic in nature. You flip a coin. Sometimes it lands head, sometimes it lands tail. There's no way to describe this using deterministic math. You need probabilistic math to describe probabilistic phenomena.So, probabilistic math is real because probabilistic phenomena is real
Math Help Conditional Probability?
basically, you consider the factor which the probability is conditional on: (in this case that they are democrat). you then find the number which satisfy this condition (400). next find the number which satisfy this condition and meet the other requirement (they are in favor of universal health care and are democrat), (in this case 260). so 260 out of 400 people are in favor. so if you choose a random person, the probability that they are in favor and democrat is 0.65 SUMMARY: no. of democrats = 400 of democrats, 260 are in favor. 260/400 = 13/20 = 0.65
Probability Math Question! Please Help!?
There are two possible outcomes, heads or tails. If you toss 10 dimes the "normal" distribution would be 5 heads 5 tails (10/2). So that is where the numerator comes from -the "normal" distribution. For the denominator there are 9 dimes (10-1) to be heads so 2 to the 9th or 2x2x2x2x2x2x2x2x2= 512 (again the 2 is the number of possible outcomes). distribution/outcomes = 5/512