what is a z-score of 80%?

Q: Lynn University wants to examine whether students display better academic performance in class…

A:

Q: Suppose Q and R are independent events. P(Q) = 0.25 and P(Q and R) = 0.1. Find P(R):

A: Given that  Q and R are independent events. P(Q) = 0.25 and P(Q and R) = 0.1

Q: 1. The input to a communication channel is a random variables x and the output is another random…

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Q: Urn A contains 2 white and 4 red marbles. Urn B contains 1 white and 1 red marble. A marble is…

A: Introduction: It is required to find the probability that the marble selected from urn B is red.

Q: 24 Se-4x-2y y doc

A:

Q: What is the probability that, out of the 4 balls drawn, exactly 2 are white? . Let the pmf of X be…

A:

Q: 11. (a) Find the pmf of X, (b) find the values of E(X), (c) calculate Pr(1 ≤ x ≤ 2) when the…

A: Note: According to Bartleby guidelines expert solve only one question and maximum 3 subpart of the…

Q: Problem #5 - Real Estate Shawn and Maddie purchase a foreclosed property for $50,000 and spend an…

A: It is given that Shawn and Maddie purchase a foreclosed property for $50,000 and spend an additional…

Q: In the first quarter of 2017, the average mortgage for first time buyers was R910,000. Assuming a…

A: We have give the following information: Mean = 910000 Standard  deviation  = 50,000.

Q: The company Robots for you, Inc. manufactures robots that help with household tasks. The revenue…

A:

Q: Louis has a bag of marbles with 3 blue marbles, 4 white marbles, and 1 red marbles. Find the…

A: Given:

Q: What is the amswer in a fraction

A: From the given problem, We have the answer P( queen/red ) = 1/13

Q: 5. A pair of fair dice are thrown 10 times. Each throw of the dice is an independent event. (a) What…

A:

Q: 11-1₂ = do 2= (1-₂) - do √o²/n₁ + 0₂/1₂ 2 known 01 and A random sample of size n₁ = 25, taken from a…

A:

Q: A recent survey revealed that 53% of Canadians have a Visa card. Suppose seven Canadians are…

A: It is given that a recent survey revealed that 53% of Canadians have a Visa card.

Q: Given a normal distribution with μ = 50 and o= 10, find the probability that X assumes a value…

A: Answer: From the given data, Mean (μ) = 50 Standard deviation (σ) = 10 The probability that X…

Q: stack of 30 flashcards includes a review card for each of the following : 10 insects, 8 trees, 8…

A:

Q: A cubic die is biased in such a way that for every integer n, 1 ≤ n ≤ 6, the probability of rolling…

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Q: Problem 7. when Compute the joint pdf of Z = X² + y², W = 2Y, fxy(x, y) = 1 2πσ2 e-[(x²+y²)]/20²

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Q: Problem 8: Consider the density function f(x) = a) Evaluate k. b) Find F(x). c) Use F(x) to evaluate…

A: Given: f(x)=kx4,x>10,x≤1

Q: During one year, a particular mutual fund outperformed the S&P 500 index 32 out of 52 weeks. Find…

A: We have given that Number of trials (n) = 52 Probability of outcomes (p) = 0.5 (As the mutual fund…

Q: If you want to predict a house price based on number of bedrooms and bathrooms in a house, what…

A: In this problem our response variable is price which is a continuous in nature. The predictor…

Q: In a large school, it was found that 71% of students are taking a math class, 73% of student are…

A:

Q: 5-50 A biased coin is tossed and the first outcome is noted. The tossing is continued until the…

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Q: a. Is repetition allowed? Select an answer b. Does order matter? Select an answer c. Which operation…

A: Given: total number of person in the class=17 group of 4 person has to be choosen

Q: As part of a research project, your team are required to conduct a study of speeds at a specific…

A: Given that  Margin of error =±3.7km/h Standard deviation =6.5km/h 90% confidence level

Q: The joint pmf of a bivariate RV (X, Y) is given by p(x, y) = = Ska²y, x= 1,2; y = 1,2,3 otherwise…

A: Given that  We have to find a..Value of k  b..the marginal density of x and y  c..check whether X…

Q: Hail Mary Shot - A Hail Mary shot is a shot thrown from a place far away from the basket. Since it…

A: Given: Hail Mary shot: Piel witnesses that 2 out of 500 hail mary shot is made. Probability of hail…

Q: (d) 3! 2! and (3-2)!

A: Given that  D) 3!.2! E) (3.2)!

Q: Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank…

A: Solution

Q: 1. Airlines often oversell tickets. Suppose that a plane with 100 seats, 104 passengers have…

A: Given information: x P(x) 96 0.15 97 0.12 98 0.14 99 0.25 100 0.17 101 0.06 102…

Q: Find the probability that when a person chose two balls randomly without replacement, both are hard…

A: Given information: no. of hard balls frequency 0 5 1 8 2 7 3 4 Total 24

Q: A fair cubic die is rolled twice. Determine the probability of rolling two odd outcomes given that…

A: given data,A fair cubic die is rolled twice ,probability of rolling two odd outcomes given that the…

Q: 3. Suppose C₁, C2, C3, ... is a non-decreasing sequence of sets, i.e., Ck C Ck+1, Ck is defined as…

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Q: A random variable X has the following probability distribution. Solve for the value of k and final…

A: Given that  Probability mass function of X is  X 0 2 4 6 P(X) 0.12 0.10 2k 0.28

Q: Determine the probability of selecting a 6 from the hand of cards shown. Enter your answer as a…

A: Givenhand of cards shown is 6,4,8,7,9,k,10Total no.of cards = 7

Q: Problem 8: Consider the density function f(x) = a) Evaluate k. b) Find F(x). c) Use F(x) to evaluate…

A: We know the density function; f(x)=kx4,x>10,x≤1

Q: LetPij = P(Xn+1 =jXn = i)where {Xn, n = Σ 01,2,3,...} is a Markov chain. Show that for a fixed i, j…

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Q: calories burned is actual less than 546, and find the P-value. On the basis of the P-value, should…

A: It is given that  Population mean, μ = 546 Sample mean, x̅ = 544.8 Population standard deviation, σ…

Q: 2. The joint PMF of a bivariate RV (X, Y) is given by p(x, y) = [k(2x+y), x= 1,2; y = 1, 2 10,…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: Page 83, 1.10.7.* Let X be a positive random variable; i.e., P (X ≤ 0) = 0. Argue that (a) E(1/X³) ≥…

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Q: The amount of time spouses shop for anniversary cards can be modeled by an exponential distribution…

A: GivenMean(μ)=50A random variable x~Exponential(μ=0)P(X<x)=1-e-xμ  ; x≥0

Q: 6.  The probability that a male develops some form of cancer in his lifetime is 0.4567. The…

A:

Q: Problem 2: Exercise 2.92 in the textbook, page 71. Suppose the diagram of an electrical system is as…

A: P(A) = 0.95 P(B) =0.7 P(C) = 0.8 P(D) = 0.9

Q: Lynn University wants to examine whether students display better academic performance in class…

A: Given that data.  In Class GPA Online GPA 4.0 4.0 3.5 2.2 3.7 3.3 3.5 3.7 2.0 2.5…

Q: 4. Jane decided to sell her house. A random variable X models the number of passengers in cars…

A: It is given that the probability for the values 1, 2, 3, are 0.3, 0.2 and 0.1 respectively.

Q: he number of chocolate chips in a chocolate chip cookie has a Poisson distribution with parameter λ…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: 3. The average ULP pump price (in cents per Litre) in South Australia for each year since 2015 is:…

A: Average is the sum of all terms divided by number of terms

Q: Consider the sample space of all five-digit numbers. [Note: the first digit of an n-digit number is…

A: Digits ={0, 1,2,3,4,...9} = 10 digits 5 digit number ( first digit is non zero)  Without 0 = {…

Q: A bin of golf balls contains 5 different brands of golf balls. You reach in and grab two dozen golf…

A: