 # Ace Your Upper level probability Tests with Plainmath's Expert Help and Detailed Resources

Recent questions in Upper level probability lyne.jade01 2022-10-17

## the standard six-sides dice are rolled (one green and one red). The number on the green is less than the number in the red. The sum of the two numbers is seven. what is the probability of the event? Tejavalli B.N2022-10-09

## Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice. a. how many sample points are possible? (hint: use the counting rule for multiple-step experiments.) b. list the sample points. c. What is the probability of obtaining a value of 7? d. What is the probability of obtaining a value of 9 or greater? e. because each roll has six possible even values (2, 4, 6, 8, 10, and 12) and only five possible odd values (3, 5, 7, 9, and 11), the dice should show even values more often than odd values. Do you agree with this statement? Explain. f. What method did you use to assign the probabilities requested Tejavalli B.N2022-10-09

## Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice. a. how many sample points are possible? (hint: use the counting rule for multiple-step experiments.) b. list the sample points. c. What is the probability of obtaining a value of 7? d. What is the probability of obtaining a value of 9 or greater? e. because each roll has six possible even values (2, 4, 6, 8, 10, and 12) and only five possible odd values (3, 5, 7, 9, and 11), the dice should show even values more often than odd values. Do you agree with this statement? Explain. f. What method did you use to assign the probabilities requested Kamjula mahendra Reddy2022-08-24

## A bag contains ard no. 1 to 25. Two cards are drawn at random one after another without replacement.  Find the probability that no. on each card is multiple of 7. dick.g.forslund 2022-08-15

## Dear someone,  If i choose 20 cell phone numbers randomly in a population of 37 100 000 cell phone subscribers, how large is the probability that at least two of them during two days in a row (a 48 hour period) will make a call to another person in this group of 20? The actual case involve a call and then an immeditate call back, which should mean that the two subscribers know each other: So the question can maybe be reformulated: How large is the probability in a population ot 37 100 000 that two persons in a random sample of 20 drawn from the 37 100 000 know each other? Is this enough information to answer the question?   Best regards, D Forslund Jyothi R G2022-08-08

## 2. A commercial jet aircraft has four engines. Each engine has independent reliability of     92% For safe landing, at least 2 engines of an aircraft need to function       a. Compute the probability that an aircraft can land safely           b. If the probability of safe landing must be 98.3%  compute the minimum required  reliability of each engine assuming two engines min out of 4 have to function         c. If the reliability cannot be improved beyond  92% find the minimum number of engines which are required for safe landing, using probability of b above for safe landing          d. Which is a better approach to safety? Look at answers to b and c above. Having 2 engines more reliable or increasing the number of engines? Discuss in numbered points bem. fionanamweyi 2022-07-21

## 83 households have desktop computers 47 have both desktop and laptop 3 percent have neither .what is the probability that a random choice made a laptop household will be choosen Maina Physicist2022-07-18

## According to a study published by a group of Universityof Massachusetts sociologists, approximately60% of the Valium users in the state of Massachusettsfirst took Valium for psychological problems. Find theprobability that among the next 8 users from this statewho are interviewed,(a) exactly 3 began taking Valium for psychologicalproblems;(b) at least 5 began taking Valium for problems thatwere not psychological. PoentWeptgj 2022-07-18

## 80% of YIC students play video or computer games. Choose 3 students at random. The e probability that at least one of 3 play video or computer game is0.8890.2160.9920.008 rachel.pace2003 2022-07-12

## You want to obtain a sample to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, you believe the population standard deviation is approximately σ=6.5$\sigma =6.5$. You would like to be 95% confident that your estimate is within 2.3 of the true population mean. How large of a sample size is required Ann Mwangi2022-07-12

## If a bag containing 4 red balls numbered 1,2,3,4 and 3 white balls numbered 5,6,7 . What is the probability that the ball is1)Red or even 2)White or even violetmoraa254 2022-07-08

## In a class of 100 students, 30 are in mathematics. Moreover, of the 40 females in the class, 10 are in Mathematics. If a student is selected at random from the class, what is the probability that the student will be a male or be in mathematics? S. Hashmi2022-06-30

## a business operates a drive in facility. on a randomly selected day, let x be the proportion of the time that the drive in facility is in use and suppose that the probability density function isf(X) Shani Khan2022-06-26

## A manufacturer of a flu vaccine is concerned about the quality of its flu serum. Batches of serum are processed by three different departments having rejection rates of 0.10, 0.08, and 0.12, respectively. The inspections by the three departments are sequential and independent. (a) What is the probability that a batch of serum survives the first departmental inspection but is rejected by the second department? (b) What is the probability that a batch of serum is rejected by the third department? IIM Pune2022-06-18

## •One nanogram of Plutonium-239 will have an average of 2.3 radioactive decays per second, and the number of decays will follow a Poisson distribution. What is the probability that in a 2 second period there are exactly 3 radioactive decays? christina nose2022-06-15

## On a final examination in Biology, the mean mark was 72 and the standard deviation was 15.Determine the standard variable of students receiving marks 60 and 92. Hasan Dawood2022-06-13

## Use the binomial probability formula to findthe probability of 2 successes (x=2) in 9trials (n=9) given the probability of successis 0.35 (p=0.35) Prajakta Athalye2022-06-10

## Your company wants to improve sales. Past sales indicates that the average sale was \$100 per transaction. After training your sales force recent sales data ( taken from a sample of 25 salesman) indicates an average sale of \$130 with a standard deviation of \$15. Did the training work? Test your hypothesis at 5% alpha level. raja Osama2022-06-05

## Consider randomly selecting a student at a certain university, and let A denote the event that the selected individual has a Visa credit card and B be the analogous event for a MasterCard. Suppose that P (A) = 0.5,P (B) = 0.4,P (A ∩B = 0.25. i) Why is it not the case that P (A) + P (B) = 1? ii) Display the probabilities and corresponding event in a Venn diagram. iii) Compute the probability that the selected individual has at least one of the two types of cards (i.e., the probability of the event A ∪B). iv) What is the probability that the selected individual has neither type of card? v) Describe, in terms of A and B, the event that the selected student has a Visa card but not a MasterCard, and then calculate the probability of this event

The majority of college-level probability practice problems will include questions related to statistics with the answers and explanations that will explain how a certain riddle has been addressed. Just think about flipping a coin or throwing dice as an example or finding a red marble in the bag with the green marbles. It is all about probability where the college probability will have more complex questions with the necessity of different equations and quantitative data questions where formulas must be used to determine the possibility of a certain outcome or prognosis. We offer help by letting you see various probability examples