In a class of students, the following data table summarizes how many students have a brother or a sister. What is the probability that a student has a brother given that they have a sister? Has a sister Does not have a sister Has a brother Does not have a brother 7 12 3 6

Q: I am being told that the sample size answer of 384 given to me was incorrect. Is there any way this…

A: 12... Margin of error =0.05 At confidence interval 95% we have to find sample size

Q: A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 24 times, and…

A: From the provided information, Number of trials (n) = 24 Probability of predicting correct outcome…

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: 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: What is the probability that a randomly selected group of 10 individuals, each independently having…

A:

Q: 20 nin I 26 nin I 40 43 nin 50 60 nax I 76 80 100 nax 1 105 120 nax I 125 D1 OB. The median value…

A: D1 :  Min = 26  Max = 76  D2 :  Min = 58  Max = 125  D3 :  Min = 43  Max = 105  Box plot consist 5…

Q: Four rats are selected at random from a cage of 5 male (M) and 4 female (F) rats. If the random…

A: Total number of rats N = 9 Number of male rates K = 5 Rats chosen in sample n = 4

Q: There 20 Malays Indians and 10 Chinese's students in a seminar. Find the value of x for each of the…

A:

Q: Consider the following directed graph of the relation R on the set A={a, b, c, d}. Tl a) symmetric…

A:

Q: The mean in standard normal distribution coincides with z=1. True False

A: It is needed to discuss about the standard normal distribution.

Q: Q9. If A, B and C three events make partition for sample space S and D is another event in S such 10…

A: Given: P(A) = P(B) = P(C) = 1/3 P(D|A) = 10/20 P(D|B) = 9/12 P(D|C) = 8/12

Q: Suppose that two defective refrigerators have been included in a shipment of six refrigerators. The…

A: The two defective refrigerators have been included in a shipment of six refrigerators. The buyer…

Q: Seven people (three women and four men) arrange themselves randomly in seven consecutive seats in a…

A: Given that There are 3 women and 4 men

Q: Find P(-1.18 < z < 1.18). Type your answer...

A: Z~N(0,1) then find  P(-1.18&lt;Z&lt;1.18)

Q: At the end of a course the final grade is decided with the help of an oral examination. There are a…

A: (a) To maximize the chances of drawing an easy subject, the best position to choose is the fifth…

Q: The length of time it takes a college student to find a parking spot in the library parking lot…

A: Mean(μ)=7.0 standard deviation(σ)=1

Q: 8. The table below shows the results of a survey on a new government policy. Survey Results B. C. D.…

A: for against no opinion total men 37 29 9 75 women 43 38 8 89 total 80 68 17 164…

Q: She sets the music player to play her best-liked songs once at random. What is the probability, to…

A: The two-way frequency table shown above  displays the playlist and genre of each song on Rayna's…

Q: As part of a fundraiser, raffle tickets were sold to participants for a chance to win a gift card in…

A: The total number of raffle tickets sold is 150. The 9 tickets will be chosen that award $5 each The…

Q: Find the number of different selections of 4 letters from the word STATISTICS.

A: "STATISTICS" No.of letters in the word " STATISTICS " =10

Q: You and your friend carpool to school. Your friend has promised that he will come pick you up at…

A: Answer:- Given, The amount of time he is late (X in minutes) is a continuous Uniform random variable…

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

A: Answer: From the given data, Z is a standard normal variable  For a standard normal variable, mean…

Q: For mated pairs of gallinules (type of water bird), let X equal the weight in grams of the male and…

A: It is given that X denotes the weight of the male and Y denotes the weight of the females. X and Y…

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

A: The probability that the student chosen at random got C is obtained below as follows:   From the…

Q: Consider a pdf f so that a random variable X~ f has expected value E[X] = 3 and variance V[X] = 10.…

A: X~f has expected value E(X)=3  V(X)=10 We have to find Standard deviation of X- Which is larger…

Q: Beth gets a sum of 5 when she rolls two fair number cubes. What is the probability that one of the…

A: (2)Answer:- We know that the sample space for a roll two number cubes is,  {(1,1) ,(1,2) ,(1,3)…

Q: Is there any chance that : Covarience (X,Y) = Varx + Vary - 2*Var(X,Y) or it has to be Covarience…

A: In statistical analysis, the covariance between two random variables X and Y is a measure of their…

Q: Use the given information to fill in the number of elements for each region in the Venn diagram. n(A…

A: nA∪B=46 nA∩B=6 nA=17 nA'∪B'=75

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: The data below is the number of runs batted in (RBIs) for the top 40 ranked players in the MLB as of…

A: The dataset is given as- 18 20 14 7 17 11 11 18 15 10 16 20 12 16 15 10 17 22 18 18 15 15 16 12 8 30…

Q: Frequency Distribution The total number of goals scored in a World Cup soccer match approximately…

A: a) The total number of goals scored in a World Cup soccer match with associated probability is…

Q: Compare P(TWELVE|AE) and P(AE|TWELVE). Interpret what your answer means. Are TWELVE and AE…

A: 5. The data about award by grade are given.

Q: (5) To identify the correct expression for the probability "In a box there are Defective and Non…

A: P(defective item) = p  P(check at least 7 items to get two defective) = ?

Q: Rework problem 7 from section 3.1 of your text, involving events E, F, and G in a sample space S.…

A: The given probabilities are PrE=0.55,PrF=0.5,PrG=0.55,PrE∪F=0.8,PrE∪G=0.75,PrF∪G=0.8.

Q: Dresden and Morgan both have the following loss distribution. Loss Possibility Loss Probability $0…

A: Loss probability Loss Probability 0 0.9 4000 0.1 Sum 1

Q: /variants/1017353/take/17/ You have 7 red marbles and 6 blue marbles in a bag. You randomly take a…

A: Answer:- Given, Number of red marbles, n(Red) = 7  Number of blue marbles, n(Blue) = 6  So, Total…

Q: Probability Mass Function. Let X be a discrete random variable with the following PMF. S Px(x) = С…

A: For discrete random variable with PMF Following rule and formula apply, Rule : ∑ px(x)=1(Rule)…

Q: (a) The entries of the generator matrix Qare 911 912 921 922

A: We have a two-state Markov chain with state space S = {1, 2}. The process moves from state 1 to…

Q: A population of 2,800 students from a certain region have normally distributed National Examination…

A: Mean(μ)=85 Standard deviation(σ)=5

Q: he weights of the fish in a certain lake are normally distributed with the mean of 18 lb and a…

A: Answer: From the given data, Mean (μ) = 18 Standard deviation (σ) = 12 X follows normal…

Q: rections: Find the probability that a randomly chosen point lands in the aded region. 15 cm

A: Find the probability that a randomly chosen point lands in the shaded region.

Q: 22. In a simultaneous throw of two dice, what is the probability of getting doublet? (a) (d) 3 23. A…

A: To determine the probability of getting a doublet in a simultaneous throw of two dice, we need to…

Q: 2. Determine whether the graph can represent a normal curve. If it cannot, explain why. 10 14

A:

Q: Prob-1 Probability that cars have been assembled in a particular plant as follows: P(plant1)=20%,…

A: The probability that cars have been assembled in a particular plant is as follows:P(plant1)=20%,…

Q: Q34 The number of hits on a certain website follows a Poisson distribution with a mean rate of 8…

A: Let us denote X=the number of hits on a certain website Given that X follows Poisson distribution…

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

A: In a steady-state system with two operators, the probability that both operators are idle can be…

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: If P(A)= 0.2, P(B)= 0.32 Calculate P(A and B)?

A: Answer:- Given, P(A) = 0.2  And P(B) = 0.32  Using formula,  According to the given information we…

Q: The following table provides a probability distribution for the random variable x. (a)Compute E(x),…

A: We have given the following probability distribution table  x f(x) 8 0.25 16 0.50 24 0.25

Q: A test has 20 multiple choice questions with three options of answer. There is ONE(1) correct…

A: sample size(n)=20 p=13                           (i.e., 1 correct option in 3 options)…