5,385 Answered Questions for the topic probability

Probability

07/14/21

if there are 5 classes and each class have 30 students what is the probabity that if we select 2 students and that 2 students are from the same class?
Kindly solve this problem. Thank you
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Probability

07/14/21

What is the value of P(AUB) if P(A∩B)=.90, P(A)=.40, P(B)=.75?
What is the value of P(AUB) if P(A∩B)=.90, P(A)=.40, P(B)=.75. The formula is P(AUB) = P(A) + P(B) - P(A∩B)
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Probability Statistics

07/10/21

How to solve this probability question?
The members of a private club are divided into two groups, Barisan and Pakatan. Group Barisan consists of 80 men and 160 women whereas Group Pakatan consists of 200 men and 120 women. A member is... more
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Probability Math Algebra 2 Mathematics

07/10/21

The scores of one class on the Unit 2 mathematics test are shown in the accompanying diagram. Find the population standard deviation of these scores, to the nearest tenth.
The scores of one class on the Unit 2 mathematics test are shown in the accompanying diagram. Find the population standard deviation of these scores, to the nearest tenth.   Unit 2 Mathematics... more
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Probability Math Algebra 2 Mathematics

07/10/21

Write a linear regression equation for this set of data, rounding values to the nearest ten-thousandth where necessary.
The mid-September statewide average gas prices, in dollars per gallon (y), for the year since 2000 (x), are given in the table below.Year Since 2000 (x): | Price Per Gallon (y)1 ... more
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Probability Math Algebra 2 Mathematics

07/10/21

Using this equation, determine how much more the actual 2005 gas price was than the predicted gas price if the actual mid-September gas price for the year 2005 was $2.956.
The mid-September statewide average gas prices, in dollars per gallon (y), for the year since 2000 (x), are given in the table below.Year Since 2000 (x): | Price Per Gallon (y)1 ... more
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Probability Math Algebra 2 Mathematics

07/10/21

Using x = 1 to represent the year 1986 and y to represent the number of new stores, write the exponential equation for these data. Round all values to the nearest thousandth.

The accompanying table shows the number of new stores in a coffee shop chain that opened during the years 1986 through 1994.   Year      Number of... more
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Probability Math Algebra 2

07/10/21

a) Write a power regression equation for this set of data, rounding all values to three decimal place.
The table below shows the results of an experiment involving the growth of bacteria.  Time (x) (in minutes)    1   3     5     7     9     11      Number of Bacteria... more
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Probability Math Algebra 2 Mathematics

07/10/21

You take true/false test that has 60 questions.If you guess on each question, and have the same chance of guessing correct on each question, what is probability to get atleast 65% of questions correct
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Probability Math Algebra 2 Mathematics

07/10/21

Determine the probability of landing on tails at most 33 times if you flip a fair coin 80 times. Round your answer to the nearest tenth.
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Probability

07/08/21

Basic Probability
Our friend Deepika needs some winter clothing, so she goes to her local clothing store to see what choices they have. Looking around the store, she sees that they have two types of winter items:... more
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Probability

07/07/21

independent and dependent events
In a carnival game called Spot the Spot, the player has to drop five disks onto a red circle. The disks must cover it completely for the player to win.    The probability that a skilled player can... more
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Probability

07/07/21

20 Different Socks of Two Types, How Many Picks to Get a Pair 100% Sure
There are 20 different socks, of two types, in a completely dark room. What is the minimum number of socks you should grab to ensure you have a matching pair?
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Probability

07/06/21

Maths questions
At a certain store the manager has determined that 40% of customers pay cash and 60% of customers pay by debit card. (No other method of payment is accepted, and no one is allowed to pay with both... more
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Probability

07/04/21

One urn contains 4 white balls, 4 black balls, and 4 red balls. 6 balls are removed from that urn. Determine the probability of 2 balls of each color being drawn.

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Probability Math Statistics

07/03/21

Construct a frequency distribution and a relative frequency histogram for the data set using five classes. Which class has the greatest relative frequency and which has the least relative​ frequency?
Ratings from 1​ (lowest) to 10​ (highest) from 36 taste testers2 5 9 1 10 10 5 10 68 8 6 5 10 1 4 9 44 5 3 5 6 2 3 10 19 4 ... more
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Probability Math Statistics

07/03/21

Construct a frequency distribution and a frequency histogram for the data set using the indicated number of classes. Describe any patterns.
Number of​ classes: 8 Data​ set: Reaction times​ (in milliseconds) of 30 adult females to an auditory stimulus 428 293 382 338 514 423389 426 372... more
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Probability

07/02/21

Probability of a "hit" when revealing 10 cards.
The premise is: I have 10 cards to flip over. 5 are from set A and 5 from set B. One of these 10 cards has a special marking on it. My question is, what is the appropriate order to flip cards from... more
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Probability

07/01/21

A really hard question (for me at least) of my homework
The research and development department of a manufacturing company has identified 4 possible types of defects for a new product (A, B, C, D). The identified probabilities are 0.4, 0.3, 0.05, and... more
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Probability

07/01/21

Simplex Method Linear Equations

minimize c=2s+t+3u Subject to s+u≥1002s+t≥50s≥0, t≥0, u≥0
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Probability

06/30/21

Four couples are to be seated in a straight line in such a way that the couples sit together. In how many ways can this be done?
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Probability

06/29/21

Probability Question......
I have this probability question that is driving me bonkers.....The probability that a high school senior owns a laptop is 0.6. The probability that a high school senior owns a car is 0.2. The... more
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Probability

06/28/21

License Plate - Probability Conditional
Hello,What is the probability of getting a license plate that has a repeated letter or digit if you live in a state in which license plates have two letters followed by four numerals? (Round your... more
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Probability

06/24/21

Medical Probability question
Your friend suggests the following as a way of doing medical testing: Just tell each person "tested" that he or she has the disease—the test result is always positive. What is the sensitivity and... more
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Probability

06/24/21

HOW MUCH DO TIRES COST
A company manufactures tires at a cost of $40 each. The following are probabilities of defective tires in a given production run: probability of no defective tires: 10%; probability of 1% defective... more
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