In a class of 25 students, 14 have a brother and 17 have a sister. There are 5 students who do not have any siblings. What is the probability that a student who has a brother also has a sister?

Q: 78. A bag contains 6 blue marbles, 4 red marbles, and 2 white marbles. If a marble is selected from…

A:

Q: Mrs. Hiatt puts the names of all 15 of her second period students on popsicle sticks and places them…

A: The probability that James will be called on at least once can be calculated using the complement…

Q: A test was given to a group of students. The grades and gender are summarized below A B C Male 2 13…

A: From the provided information,   A B C Total Male 2 13 3 18 Female 6 14 18 38 Total 8 27 21…

Q: Assume that when human resource managers are randomly​ selected, ​44% say job applicants should…

A: p=0.44 sample size(n)=25 Let "x" be no. of human resource managers ay job applicants should follow…

Q: Rework problem 28 from section 3.1 of your text, involving the inspection of refrigerators on an…

A: EVENT Probability too much enamel 0.23 too little enamel 0.19 Uneven application 0.35 no…

Q: Consider the trash bag problem. Suppose that an independent laboratory has tested trash bags and has…

A: The sample mean is 50.560. The population standard deviation is 1.68. The sample size n is 40.

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Population standard deviation(σ)=58.4 Margin of error(E)=5 confidence level=99%

Q: You draw one card from a 52 card deck. Then the card is replaced in the deck, the deck is shuffled,…

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Q: A single card is drawn at random from a shuffled deck. What is the probability that it is red? s the…

A: “Since you have posted multiple questions, we will provide the solution only to the first five…

Q: Let X be the tow rating of a randomly chosen popular SUV from the list above. (a) What are the…

A: The variable x denotes the tow rating of a randomly chosen popular SUV from the list above.

Q: The price of a stock is modeled with a geometric Brownian motion with drift μ=-0.25 and volatility…

A: The price of a stock is modeled with a geometric Brownian motion with drift μ=-0.25 and volatility…

Q: Y|0~f(yle) = I(y E {1,...,0}), i.e., the data Y is 0(1+0) 10) that has the unknown parameter 8. The…

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Q: Rework problem 8 from section 3.1 of your text, involving events E, F, and G in a sample space S.…

A: Assume that Pr[E] = 0.45, Pr[F] = 0.5, Pr[G] = 0.6, Pr[En F] = 0.3, Pr[EnG] = 0.35, Pr[F nG] = 0.35,…

Q: Potential customers arrive at a small machine maintenance facility according to a Poisson process…

A: We want to find the probability that a customer is turned away, which occurs when all four machines…

Q: The following table represents the highest educational attainment of all adult residents in a…

A: total number of students=20966 total number of students with high school only=4550 total number of…

Q: In a certain year, 23.4% of all light vehicles were light trucks, 7.0% were SUVS, and 69.6% were…

A: Let D be the event that the crash was deadly. A be the event that the driver was in light trucks. B…

Q: • Watch help vince In a class of 30 students, 19 have a cat and 12 have a dog. There are 6 students…

A: Given information :  Total students = 30  Students having a cat  P(cat) = 19 /30 Students having a…

Q: In the figure the robot must go from A to B only moving as indicated by the arrows and cannot pass…

A: Number of rows corners in the grid = m = 6 Number of column corners in the grid = n = 9

Q: The average price of a college math textbook is $177 and the standard deviation is $27. Suppose that…

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

Q: Suppose X₁, X2, ..., Xn are i.i.d expoential random variables with parameter A. Let Z = EX₁. Show…

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Q: Q8. If P(A) = 0.3, P (BC) = 0.4 and P(An B) = 0.2. Find P(AUB), P (AUB), P (An BC), P(AB) and show…

A: The probabilities for the given data is determined below as follows: From the information, given…

Q: Consider the following time series data. Week 1 2 3 4 5 6 Value 19 12 17 10 17 14 Using the naive…

A: Week Value 1 19 2 12 3 17 4 10 5 17 6 14

Q: In a class of students, the following data table summarizes how many students have a brother or a…

A: From the provided information,   Has a brother Does not have a brother Total Has a sister 5 18…

Q: Given X~ N(20,16), find c. P( 19 < X<23) (4 decimal place)

A: X~N(20,16) Mean(μ)=20 Variance(σ2)=16 standard deviation(σ)=16=4

Q: Find the probability of tossing and getting tails and a Coin then drawny a club card from 52 cards…

A: A coin is tossed and the deck of 52 cards are taken.

Q: Given X N(20,16), find b. P (X <19) (4 decimal place)

A: X~N( μ , ?2 )   μ=20 , ?=4   Z-score =( x - μ )/?

Q: Consider the following table, which gives a security analyst’s expected return on two stocks and the…

A: Beta of aggressive stock = (2.5-27)/(8-20) = 2.04167 Beta of defensive stock = (4.3-14)/(8-20) =…

Q: Find, if​ possible, the number of elements in sets​ A, B, and C using the given information on the…

A: It is required to find the number of elements in sets A, B, and C, if possible, using the given…

Q: Find P(-1.18 < z < 1.18).

A: From the provided information, P (-1.18 &lt; z &lt; 1.18)

Q: Determine the expected count for each outcome. The expected count for outcome 1 is. (Round to two…

A: n=714

Q: Based on the data shown below, calculate the correlation coefficient (to three decimal places)…

A:

Q: Suppose that events M and N are mutually exclusive, P(M)= 0.6, and P(N) = 0.8 What is P(M and N)?…

A: P(M)= 0.6, and P(N) = 0.8

Q: a. If the store were to open 4 lanes, how many customers will be in line on average? b. Suggest to…

A: From the given information, the customers will be in line on average is as follows a) Since 40…

Q: the sets A {1,2,3,4,5), B = {3,4,5,7) and C= {2,4,6,8). Then the set (An C) B is a) {3,5} b) {3,5,7}…

A: A= 1,2,3,4,5 B = 3,4,5,7 C = 2,4,6,8

Q: 2010 Income Distribution up to $100,000 The following table shows the distribution of household…

A: The following table shows the distribution of household income in 2010 for a sample of 1000…

Q: Suppose a random variable has a CDF given by Fx(x) = (1-e-x)u(x). Find the following quantities: (a)…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: (c)The failure ages of a particular electrical component are observed to follow an exponential…

A: The failure ages of a particular electrical component are observed to follow an exponential…

Q: 4 35/ A Fair die is rolled eight times. Find the Probability that no more then 2 Sixes come up

A: We want to find the probability of rolling no more than 2 sixes. i.e. 2 or fewer or less than or…

Q: Please round all answers to 2 decimal places. Given the table below, use your calculator to find…

A: The total number of pairs of observations is n = 6.

Q: Can you answer subpart d now that I am using a new question

A: From the given information       n = 100  (number of trials)     P = 0.5 (probability of success)…

Q: A​ person's blood pressure is monitored by taking 44 readings daily. The probability distribution of…

A: n=44μ=129σ=33

Q: has the following grade scale 15% HW 60% Exams 25% Final You receive the following scores on the…

A: A syllabus has the following grade scale 15% HW 60% Exams 25% Final You receive the following scores…

Q: 26. Lots of coins. Suppose we toss 100 fair coins and record the percentage of heads. a. According…

A: According to our guidelines, we are supposed to answer only 3 sub-parts. a) The Central Limit…

Q: answer b and c are not clear, can you upload them again??

A: λ = 1.5 per week  P(X = x ) = e^-λ (λt)x / x! Where x = no of accidents  in a week As per above…

Q: Problem #5: A 2-digit code is obtained as follows. The first digit is a random integer from 0 to 5…

A: A 2-digit code is obtained as follows. The first digit is a random integer from 0 to 5 (inclusive)…

Q: 5. A bag contains 4 red marbles and 2 blue marbles. You draw a marble at random, without…

A:

Q: For all A, B ∈ F with A ⊂ B holds P(A) ≤ P(B). Provide a proof, I know the following is given but I…

A: To prove that for any events A and B belonging to a probability space F, with A being a subset of B,…

Q: If z is a standard normal random variable, find the probability. The probability that z lies…

A: From the provided information, z is a standard normal random variable. The probability z lies…

Q: The national flufferball association decides to implement a drug screening procedure to test its…

A: Answer:- Let, D represent the set of people take the enhancing drug. And P represents the positive…

Q: What is the mean and standard deviation of the standard normal distribution?

A: Normal Distribution: In statistics, a normal distribution pattern is a typical pattern where the…