23 Answered Questions for the topic Probablity

Probability of Independent Events

A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 4 answer choices - a, b, c, d - and only one correct answer. What is the... more

03/12/18

What is the probability of selecting a jury of all​ students?

The grade appeal process at a university requires that a jury be structured by selecting seven individuals randomly from a pool of eleven students and eight faculty.     (a) What is the... more
Probablity

10/21/17

If 30% of people taking an exam fail and 3 people take the exam what is the probability one will fail?

I need to know what the probability is one person fails out of three taking an exam when the percentage of failure is 30%. 
Probablity Combinations

10/10/17

Find the probability of the given event.

An unbiased coin is tossed five times. Find the probability of the given event. (Round your answer to four decimal places.)The coin lands heads more than once.
Probablity

09/27/17

A fair coin is flipped six times. What is the probability that heads occurs exactly 6 times if it is known that heads occurs at least four times?

Just as the title says.   A fair coin is flipped six times. What is the probability that heads occurs exactly 6 times if it is known that heads occurs at least four times?
Probablity

08/15/17

Probability

An auto parts seller finds that 1 in every 100 parts sold is defective. Find the probability that the first defective part sold is the tenth one.
Probablity

04/12/17

there are 12 shirts in your closet, five blue, three green, and four red. You randomly select one to wear. It is blue or green.

there are 12 shirts in your closet, five blue, three green, and four red. You randomly select one to wear. It is blue or green. this is a question of probability, and i keep thinking it's easy but... more
Probablity

02/18/17

below description for question

A random experiment consists of tossing a fair coin and rolling a die together. What is the probability of obtaining Tails on the coin and an even number on the die   a)0.25b)0.5c)1d)0.75
Probablity

12/13/16

When four standard six-sided dice are rolled, what is the most likely sum of the four numbers?

 a. 7 b. 14 c. 21 d. 28 e. none of these
Probablity

04/20/16

Find the mean of all even numbers that can be formed using exactly three of the digits 2,3,5, and 7.

 Find the mean of all even numbers that can be formed using exactly three of the digits 2,3,5, and 7.
Probablity

04/18/16

Four coins are tossed. What is the probability of tossing all heads

 Independent and Dependent Events
Probablity

03/19/16

Finding probablity

Miguel Cabrera has had 369 at bats, and he has 127 hits and 21 home runs. (Note: The home runs are included in the hits data.) If he is challenged to a batting battle, what is the expected score of... more

12/08/15

What is the probability of drawing a yellow SweetTart three times in a row if each SweetTart selected is eaten before the next SweetTart is drawn?

jaylan has a fun size bag of SweetTarts. Inside the bag are 4 pink, 1 blue, 2 yellow, 3 purple and 2 green SweetTarts. 
Probablity Math

11/29/15

Probability

4 fair coins are simultaneously flipped and 1 fair 4-sided die (with numbers 1-4 on the faces) is tossed. What is the probability that the number of heads is equal to the number that comes up on... more
Probablity

10/12/15

Find the probability of being dealt 5 cards from a standard 52-card deck, and getting one pair.

I know there are 2598960 ways to draw 5 cards. I tried a few different ways to find the complete answer but I got it wrong every time.

04/28/15

Is this company a good idea for Joey based on the information below?

Joey has determine that the probability of someone cracking their iphone screen in any given month is 4% and fixing it would cost Joey $43 per phone. Joey is considering charging $9.99 pe month for... more
Probablity

03/20/15

draw a tree diagram for the experiment that consists of flipping a coin, followed by rolling a die, followed by flipping a coin again

draw a tree diagram for the experiment that consists of flipping a coin, followed by rolling a die, followed by flipping a coin again
Probablity

11/30/14

find odda of evenet

Seven slips of paper marked with the numbers 1,2,3,4,5,6,7 are placed in a box and mixed well. Two are drawn what are the odds in favor of the sum of the numbers on the two selected slips is not 5?
Probablity

01/26/14

standard deviation

Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. The cheerleaders for a local professional basketball team must be... more
Probablity

01/26/14

standard deviation

Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $32,000 and a standard deviation of $3000. If a teacher is selected at random,... more

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