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Probability
The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.
14,643 Questions
How many cubic yards are in a sidewalk that's 48in wide by 40ft long by 3.5 in thick?
1 cubic foot = 1,728 cubic inches
1 cubic yard = 27 cubic feet = 46,656 cubic inches
1 ft = 12 inches
40 ft = 480 inches
Volume of the walk = (48" x 480" x 3.5") = 80,640 cubic inches = 1.7284 cubic yard (rounded)
What are some examples of qualifiers you might find in multiple choice questions stems?
What are some examples of qualifiers you might find in multiple choice questions stems?
If you roll a die 300 times how many times would you expect to get a 5?
If George rolls the die 300 times, how many fives will he roll?
19
16/27
What are all the 4 digit combinations with 0-9?
Method 1: four digit number start after 999 and end at 9999
so 4 digit no. = 9999-999 = 9000
method 2: - - - - there are four places in 4 digit no. In first place only 1-9 can come , for rest 0-10
so total no. = 9*10*10*10=9000
* * * * *
Wrong!
Those are the number of PERMUTATIONS, not combinations. In a combination, the order of digits does not matter. So 1234 is the same as 1342 or 4213 etc.
Explain the importance of random and stratified sampling?
A sampling method in which all members of a group have an equal and independent chance of being selected.
What is the probability that a 41 percent free-throw shooter will miss her next free -throw?
If she is a 41% shooter she will probably score a goal 41 times out of a hundred, but she will probably miss the other 59 times out of a hundred. So the probability that she will miss is 59 out of 100 = 59% = 0.59
Yes, those events can be found.
theoretical
What is circular systematic sampling?
Circular systematic sampling is a random sampling method. An example is random sampling of households. Assume that a random number generator provides the number 49 as a starting point. Starting with the household that is 49 on the target list, every nth household on the list would be sampled until the desired sample size is reached
What is the probability that you get a 5 on the dice and a tail on a coin?
1/12 (1/6 chance of a 5 * 1/2 chance of getting tails)
What is Critical cross field outcomes?
Is what they are expecting you to know at the end of the course
What advanced mathematics topics are used in blackjack?
The subject mathematics needs focus, problem solving ability for which a researcher needs to invest their time. So, they must find a selective PhD topic in mathematics that helps them bring original ideas and research.
Below are a few PhD topic in mathematics subject. If you are looking for the best ideas to help, then these topics will give you a better vision.
- An illustration of mean, mode, and median.
- Mathematical definitions of infinity and how to calculate it.
- Real-life applications of the Pythagorean Theorem.
There is no single word. It is the "probability of that event" (four words).
How many different possible outcomes are there when four 10 sided dice are rolled at the same time?
There are 104, or 10000 permutations of four 10 sided dice.
Tommy flips a coin four times How many ways can he get three heads and one tail?
There are 4 ways to get 3 heads and 1 tail for 4 coin flips. They are: THHH, HTHH, HHTH & HHHT.
What are the chances of rolling an even number on a six- sided die?
50% or one in two because there are three odd numbers and three even numbers, so the chances of rolling an odd or even number are the same
If you toss three coins 10000 times how many times would you expect that exactly 2 heads appear?
The expected number is 3750.
What is the probability of getting a sum of 5?
Assuming you mean when rolling 2 dice, the probability is the number of ways of getting the sum of 5 over the number of possible outcomes.
4 ways of getting 5 (1+4; 2+3; 3+2; 4+1)
36 outcomes (6 x 6)
the probability is 4/36 = 1/9
