The probabilities that a student will receive an A, B, C or D grade are 0.4, 0.3, 0.2 and 0.1 respectively. Find the probability that a student will receive Atleast B grade.

Q: pose that the distribution of the lifetime of a car battery produced by a certain car company is…

A: Given Mean=1000 Standard deviation=100

Q: You have relatives coming for dinner this weekend.  The probability that your uncle Josiah will show…

A: given data  P(uncle josiah  show up)  = 0.38 P(aunt Beatrice show up) = 0.27 P(both show up) = 0.1…

Q: Seven yellow boxes and six blue boxes are in a storage room. Four boxes are to be selected at…

A: GivenNo.of yellow boxes=7No.of blue boxes=6

Q: The key numerical inputs in a sample size calculation are: Select all that apply: Group of answer…

A: The given choices are: The expected variability of the endpoint being measured. Probability of a…

Q: A gas supplier maintains a team of Engineers who are available to deal with leaks reported by…

A: The following information has been provided: Let X be a random variable represents the time…

Q: Assume that Jim, Bruce, Valerie, and Simon are four of the 22 members of the class, and that four of…

A: Introduction: It is required to find the probability that Jim, Bruce, Valerie, and Simon will be…

Q: What is the probability that a sample mean has strength of 68.8 MPa? From the data, obtain an Event…

A: Given that the copper wiring is being tested for its strength with Nμ,σ=0.42. There are 6 random…

Q: Jade, a 20-year-old female, has a brother that died as the result of a neonatal lethal recessive…

A: Given that the incidence rate of a neonatal lethal recessive disorder is 140000 in the general…

Q: An article contained the following observations on degree of polymerization for paper specimens for…

A: Given 415 421 422 422 425 427 431 435 436 439 446 447 450 451 456 462 465 n=17 Alpha=0.05

Q: Use R code: On Day 1, Basket A contains 10 red balls and Basket B contains 10 blue balls. Each…

A: Given: On Day 1, Basket A contains 10 red balls and Basket B contains 10 blue balls. Each morning…

Q: 4-9 The probability density function of the net weight in pounds of a packaged chemical herbicide is…

A: (a). The probability density function is given. f(x)=2 . Where  x lies between 49.75 and 50.25. In…

Q: Let A = (1,3,5,6,7), B = (1,5,7) Find AU B = Let A = (G,0,0,d), B = {o, d, y) Find AU B = Let X =…

A: We have given that:A=1,3,5,6,7B={1,5,7}

Q: The table shows the result of a restaurant survey. Meals Service good Service poor Total Lunch 61…

A: Required probability is P(service was poor | meal was lunch)

Q: Major League Baseball's World Series is a maximum of seven games, with the winner being the first…

A: Given Information: Consider the given probabilities of Atlanta winning each game Game Probability…

Q: C a. State a conclusion about the null hypothesis. (Reject Ho or fail to reject Ho.) Choose the…

A: It is given that Level of significance = 0.05 P-value = 0.0232

Q: Elephants are the mammals with the longest gestation period. One species of elephant has a mean…

A: Let X represents the gestation period. Given that, X~ N(635, 63)  μ= 635, σ= 63    Sample size is n=…

Q: Problem #8: A system consists of five components is connected in series as shown below. -12 3 4 5…

A:

Q: a) What is the probability that the name of a state (of the United States) chosen at random begins…

A: If we let, E be any event then the probability of an event E is calculated by using the formula,…

Q: Determine the area beneath the curve : y = 4- 0.25x²between the limits x = -4 to x =+ 4

A:

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A: Probability is defined as the chance or a likelihood of the occurrence of a certain event. It is the…

Q: You have relatives coming for dinner this weekend.  The probability that your uncle Josiah will show…

A: given data  event A: uncle josiah show up B : aunt beatrice show up   P(A) = 0.48 P(B) = 0.43 P(A∩B)…

Q: Every year, Atreyu randomly selects a birthday card from a local greeting card store. The…

A: Solution: Let X be the  number of singing birthday cards.  The probability that the singing card on…

Q: The weight of the mature cabbage, X, is assumed to be normally distributed with expected value μ =…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Give the following answers to three decimal places, where appropriate. (c) Find the expected value…

A:

Q: he annual maximum stage height in a river channel is modeled using a Type I symptotic distribution…

A:

Q: We have the weights of 18 individuals (9 men and 9 women) weight women: 38.9, 61.2, 73.3, 21.8,…

A:

Q: What is the probability that the random 3 digit number would be even?

A: 3 digit number  P(the number is even) = ?

Q: possible to get the following results: (a) 4 queens (b) No face card (c) Exactly 2 face cards

A: by bartleby policy i can gives only 3 subparts at a time  Total cards = 52 to be chosen = 5 and…

Q: Question 12 In a certain communications network the probability of an error in a single bit is…

A: Given that, In the communication network the probability of an error in a single bit is 5×10-3. Need…

Q: Let us suppose that a particular lecturer manages, with probability 1, to develop exams that have…

A:

Q: what are the odds against drawing the letter s from the word mississippi?

A: Given word is "Mississippi"Total no.of letters in the word=11No.of "s" in the word =4

Q: (d) The first two random numbers for arrivals are 55 and 12. The first two random numbers for…

A: From given data we have : Time second customer finish transaction (Arrival random number = 55,12 and…

Q: A tram company runs two tram routes from station ?P to station ?Q. The first route is a direct tram,…

A: From the given information, A tram company runs two tram routes from station P to station Q. The…

Q: A pair of dice is rolled. Find the probability of rolling a sum not less than 6

A: roll a fair of dice P(sum not less than 6) = ? roll a single dice : outcome : {1,2,3,4,5,6] total…

Q: The number of hours spent on social media per week by teens is normally distributed with a mean of…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Suppose that one variable, x, chosen randomly uniformly from [U, 2], and another variable, y, is…

A:

Q: Suppose we want to choose 5 letters, without replacement, from 15 distinct letters. (a) How many…

A: Solution-: Here, n=15,r=5 We want to choose 5 letter, without replacement from 15 distinct letter.…

Q: The histogram to the right shows the number of books read by 23 people in a book club over a 3-month…

A: given data  no. of books no. of people(f) midpoint(x) fx 0-2 8 1 8 3-5 7 4 28 6-8 6 7 42…

Q: A new AIDS prevention drug was tried on a group of 224 HIV positive patients. Forty-five patients…

A: Given information: A new AIDS prevention drug was tried on a group of 224 HIV positive patients, 45…

Q: A steel cable consists of eight high-strength steel strands. The strength of each strand can be…

A:

Q: A company prices its tornado insurance using the following assumptions: • In any calendar year,…

A: It is given that in a year there can be at most one tornado and the probability of a tornado is…

Q: The investor chooses between shares of 20 companies, 8 of which are insurance companies, 5 are legal…

A: Given: total companies=20 number of insurance company=8 number of legal companies=5 number of…

Q: There are three different types of circus prizes marked big (B), medium (M) and little (Z). Each…

A: Given that  big prize(B): 5 R and 8G. Total balls:5+8=13 Medium prize(M): 3R and 2G. Total…

Q: et X be a Uniform(-5,5) random variable. (a) The moment generating function of X is Mx(t) = A(eBt-…

A:

Q: If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the…

A: GIvenTotal no. of cards in a deck=52No.of "6" numbered cards in a deck=4

Q: A newspaper published an article about a study in which researchers subjected laboratory gloves to…

A:

Q: Suppose that the times taken for germination for cauliflower seeds are normally distributed with a…

A: given data,  normal distribution μ=7.1probability that exactly 85 % of the cauliflower seeds…

Q: Nick takes half-court shots on a basketball court. He is a streaky shooter, so his shot outcomes are…

A: Given Information: Consider state 0 as make shot and state 1 as Miss shot.

Q: Suppose we want to choose 2 letters, without replacement, from the 3 letters A, B, and C. (a) How…

A: given data we haveto find out the number of ways for the given data we want to choose 2 letters from…