Assume that on a standardized test of 100 questions, a person has a probability of 85% of answering any particular question correctly. Find the probability of answering between 80 and 90 questions, inclusive round four decimal places. P(80 ≤ X ≤ 90) =

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Q: Kathy is deciding on her schedule for next semester. She must take each of the following classes:…

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Q: please answer the example questin

A: Here's a detailed calculation for better understanding. The Negative Binomial probability mass…

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Q: For two independent events A and B, if P(A n B) = 0.049 and P(A) = 10P(B), then P(A) is equal to:

A: Step 1:Given that :P(A∩B)=0.049P(A)=10P(B)Find the P(A).Step 2:A and B are independent events.We can…

Q: Use the Student's t distribution to find t for a 0.90 confidence level when the sample is 5. (Round…

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Q: In a regression study, relating Price/unit (x) to Weekly Sales (in Kg.), with the scatter plot…

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Q: None

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Q: (a) Suppose that you throw 4 dice. Find the probability that you get at least three 3s. (b) Suppose…

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Q: If P(A) + P(B) = 0.9 and P(An B) = 0.2, then what is the value of P(An B') + P(A'n B)? Select one:…

A: Given that the probabilityP(A)+P(B)=0.9P(A∩B)=0.2

Q: out seven rebuilt pumps

A: Rebuilt pumps =7Defective pumps =3Two pumps are to be selected, then classified as defective or not…

Q: From a sack of fruit containing 3​ oranges, 2​ apples, and 3 ​bananas, a random sample of 5 pieces…

A: To determine the correlation coefficient between X and Y, first, we need to calculate the covariance…

Q: The probability mass function for a discrete random variable X is defined as ((1+0)-(x) 0; x =…

A: Let's break down the given probability mass function (pmf) for the discrete random variable…

Q: containing classified information. The device will erroneously admit 3 in 1,017,000 unauthorized…

A: Let A be the event that the person who seeks access is authorized.R be the event that person is…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 10 inches,…

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Q: standard normal distribution

A: A standard normal distribution is a specific type of probability distribution where the mean is 0…

Q: A certain tennis player makes a successful first serve 63% of the time. Suppose the tennis player…

A: The objective of this question is to find the mean and standard deviation of the number of…

Q: 2) In tossing a fair die repeatedly (and independently on successive tosses), determine the…

A: It is required to find the probabilities of getting the first "1" on the tth toss, and on the 5th…

Q: Lana arrives at a bus stop at a uniformly random time. When Lana arrives at the bus stop, either of…

A: Step 4: Evaluate the integral: P(X<Y)=∫0t​∫0y​​10t1​e−10x​dxdy P(X<Y)10t1​∫0t​(−10e−10x​)0y​dy…

Q: What is the projected number of times when a person rolls the cube and flips the coin 120 times,?

A: Rolling a cube: A fair six-sided die has six equally likely outcomes (1, 2, 3, 4, 5, 6). So, the…

Q: Stress at work: In a poll about work,  51%  of respondents said that their jobs were sometimes or…

A: The objective of this question is to find the mean number of workers who find their jobs stressful…

Q: Please show all work when answering this question. This is ungraded and unsolved lecture question,…

A: To check if the process X(t)=B(t)+4t is a martingale with respect to the Brownian Motion filtration…

Q: P(AUB) a) 0.63 A B 0.25 0.02 0.26 0.01 0.04 0.05 0.27 C b) 0.37 c) 0.27 d) 0.53

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Q: (c) Construct a double-stem-and-leaf display of the data. Use the stems 1°, 2*, 2, 3*, and 3 such…

A: First, arrange the given values in ascending order to make stem and leaf display. Then find the stem…

Q: A look at all Ontario households using natural gas heating in 2012 shows that the mean monthly…

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Q: SCENARIO 10-13 The amount of time required to reach a customer service representative has a huge…

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Q: of the table of critical values of the t-distribution. native hypotheses. al places as needed.)…

A: Sample size n=67Sample mean=41Sample standard deviation=3.3

Q: A campus researcher wanted to investigate the factors that affect visitor travel time in a complex,…

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Q: A study was done to determine the efficacy of three different drugs-A, B, and C-in relieving…

A: A study was done to determine the efficacy of three different drugs , , and -in relieving headache…

Q: The table shows the results of a restaurant survey. Find the probability P(Y'|B'). Service Great…

A: MealABCDTotalX37453325140Y19144742122Total56898067262P(Y'|B') = ?

Q: A six sided die is being rolled 15 times. This die is weighted so that on average a 5 is rolled six…

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Q: Let T ∼ Pascal(m = 30, p = 1/2). For example, T could be measuring the number of coin tosses…

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Q: Please do the following questions with full handwritten working out . Answer is in the image

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Q: Please answer this question and show all work. This is an ungraded and unsolved question from…

A: To show that Brownian Motion is continuous in the second mean, i.e., E[(B(t)−B(s))2]→0 as s→t, we'll…

Q: Q20. If a number x is chosen at random from the numbers -2,-1,0,1,2. Then, the probability that x²<2…

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Q: Fraud detection has become an indispensable tool for banks and credit card companies to combat…

A: The transaction data of the fraud detection firm is provided as follows:The fraudulent transactions…

Q: A tire manufacturer believes that the tread life of its snow tires can be described by a Normal…

A: Part 1a)Given:Mean tread life (μ) = 31,000 milesStandard deviation (σ) = 2,500 milesCalculate the…

Q: x P(x) 0 0.2 1 0.05 2 0.15 3 0.6 Find the mean of this probability distribution. Round your answer…

A: xP(x)00.210.0520.1530.6Mean of the distribution = ?

Q: An earthquake had a Richter scale magnitude of 7.3. Its aftershock had a Richter scale magnitude of…

A: The objective of this question is to find out how many times more intense the original earthquake…

Q: In an experiment, college students were given either four quarters or a $1 bill and they could…

A: Purchased gumKept the moneyTotalStudents given four quatrers301545Students given a $1…

Q: Four buses carrying 153 high school students arrive to Montreal. The buses carry, respectively, 34,…

A: Four buses carrying 153 high school students arrive to Montreal. The buses carry, respectively, 34,…

Q: P(X) = 0.62, P(Y) = 0.28, P(X and Y) = 0.16. Find P(not YIX). O none of the above 0.4129 0.5714…

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Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: Step 1:The IQ scores of adults are normally distributed, with a mean of 100 and a standard deviation…

Q: You may need to use the appropriate appendix table or technology to answer this question. The life…

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Q: please anwer all parts

A: a)   probability that the time taken by a customer representative (CR) to help the next customer is…

Q: Pn Suppose 6n fair dice are rolled. Define a probability space that describes this exper- iment. Let…

A: Defining the Probability Space:We have 6n fair diceEach die can show a number from 1 to 6.The sample…

Q: Completee answer correctly

A: Step 1: Define what mutually exclusive events areMutually exclusive events are events that cannot…