2. Which of the following random variables isn't discrete? the number of children in a family b. the annual rainfall in a city the attendance at a football game C. the number of patients treated at an emergency room in a day e. the number of classes taken in one semester by a student

Q: Determine whether each of the following experiments/situations involved discrete or a continuous…

A: Given : Discrete r.v :     A r.v which contain possible countable finite or infinite values .…

Q: Z is a standard normal random variable. the P(1.05≤Z≤2.13) equals?

A:

Q: Determine whether each of the following experiments/situations involve a discrete or a continuous…

A: A Discrete random variable: It can be defined as a variable that has a finite or countable number of…

Q: 4. The random variable X. representing the number of nuts in a chocolate bar has the following…

A:

Q: 1) The random variable X, representing the number of nuts in a chocolate bar has the following…

A: As per our guidelines we are suppose to answer only one question1)Given  X 1 2 3 4 5 P(X) 1/10…

Q: A set of random variables, x, and their corresponding probability, p(X), is tabulated below: P(x)…

A:

Q: Suppose a random variable K has the following distribution: k 2 4 6 8 P(k) 0.1 a b 0.4 1. Find the…

A:

Q: 1. Identify whether the following statement is a random variable or not: i. The number of integrated…

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

Q: If Z is a random variable from a standard normal distribution and if P(Z <b) D 0.75, then P(Z<-b)…

A:

Q: Classify the following as Discrete or Continuous random variable. 4. Teachers in the division in a…

A: 4. Teachers in the division in a year  - Discrete random variable.5. The number of male singers -…

Q: Is the random variable given in the accompanying table discrete or continuous? Explain. Number of…

A: Here data giving that number of girls and its probabilities.

Q: Identify the following as a discrete random variable, continuous random variable, or not a random…

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

Q: (b) From the distribution you found in part (a), what can you say about the distribution of X? The…

A: Given: X 0 1 2 3 4 5 6 7 P(X=x) 0.2791 0.3907 0.2344 0.0781 0.0156 0.0019 0.0001 0.00000357

Q: 1. Is it better to fish from the shore or a boat? Let x be a random variable representing the number…

A: Here sample size, n= 8 Difference of two mean is given by, (XB bar - XA bar) + - t* √(Sa2+Sb2)/n…

Q: 1. Which of the following is an example of continuous random variable? a. capacity of an auditorium…

A: Given the three statements , we need to choose correct option from given multiple choices.

Q: Find the expected value for the random variable. 9. 12 15 18 21 P(z) 0.11 0.25 0.39 0.16 0.09 E(z) =…

A: Formula : E(z) =  Σz * p(z)

Q: Consider the probability distribution of random variable N: 1 2 P(n) 0.2 0.2 0.6 Consider the…

A: Expectation of a Discrete Random Variable: The expectation of a discrete random variable X, denoted…

Q: 1. Which of the following random variables is discrete? a. the length of time a battery lasts b. the…

A: Discrete variable:   It is nothing but it takes or considers only the countable number of values or…

Q: Consider a random variable, z, that has a standardized normal distribution. Determine the following…

A: We have given that,  Z from the standard normal distribution with mean (μ) = 0 and standard…

Q: If X represents a random variable coming from a normal distribution and P(X 8.7) = 0.37. %3D True…

A: P(X &lt; 8.7) = 0.63 P(X &gt; 8.7) = 0.37

Q: Give an example of a discrete random variable.   Question 21 options:   The number of inches of…

A: First define the terms :  Random variable :  It takes numerical values which determined by the…

Q: If X represents a random variable coming from a normal distribution and P(X 6.5) = 0.59. True O…

A: It is given that P(X&lt;6.5)=0.41.

Q: Find the expected value for the random variable. 21 12 9. 15 18 P(z) 0.12 0.21 0.41 0.18 0.08 (Type…

A: The expected value or mean of z is as follows:

Q: A. Classify each random variable as either discrete or continuous. 1. The number of arrivals at an…

A: For the given the 10 statements.  We need to answer if each randomly variable as either  discrete…

Q: Please do answers from g- h thank you

A: The formula for mean, variance and standard deviation of a random variable X is given by:

Q: Which is a discrete random variable?   Z = "the weight of newborn African elephants"   X = "the…

A: The discrete random variable is:-

Q: The joint distribution of the random variable X and Y is given in the following table: 2 3 4 Y 1 16…

A: Introduction: The joint probability distribution is the corresponding probability distribution on…

Q: Is the random variable given in table discrete or continuous? Number of Girls in Four Births Number…

A: we can see that given probability distribution table gives probability for fixed points x= 0,1,2,3,4

Q: The distribution of the following random variable is:

A: Given that the random variable is, X¯-μsn Here, X¯: Sample meanμ: Population means: sample standard…

Q: In the following distribution table, the probability of the random variable Y taking the values…

A:

Q: Below is the joint distribution of two random variables X and Y (z,y) 0. h(y) 9(2) The expected…

A:

Q: 5. If z is a standard normal random variable, find the value of c: P(z < c) = 0.5557

A: Observe the table value closest to 0.5557 in the statistical table, which is 0.5557. The area value…

Q: The random variable ?, which is the number of telephones coming to a telephone exchange in a…

A: Part (a) Let X be a random variable denotes the number of telephone calls coming to a telephone…

Q: If X has a normal distribution, which of the following is true about the shape (distribution) of the…

A: Given that, X has a normal distribution

Q: The joint distribution of the random variable X and Y is given in the following table:

A: From the total probability condition, ∑x∑yPx,y=1 Consider,…

Q: 4. Which of the plots below show a zero correlation between random variables x and y? C. c А. а B. b…

A: Given :  There is four graph shown in question. We need to find 4.which of the following plot below…

Q: 4 In a restaurant in California, 3 out of 5 customers ask for water with their meal, If a sample of…

A:

Q: Let x be a random variable that represents the percentage of successful free throws a professional…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: Classify the following random variables as discrete or continuous. the number of defective computers…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: If Z is a random variable from a standard normal distribution and if P(Z > c) = 0.39, then P(Z < -…

A: In question,  Given that, Z is a random variable from a standard normal distribution. And pr(Z &gt;…

Q: Which of the following random variables is discrete? a. W=duration of travel (in minutes) from house…

A: A random variable is said to be discrete if it can take only an integer value.

Q: 6. 8. P(z) 0.6 0.1 0.2 0.1 2.

A: As per guideline expert have to answer first question only.

Q: variable, what is the value of Z if the area to the right of Z is 0.7054?

A: Observe the standard normal table to find the z score corresponds to the probability of 0.7054 at…

Q: Suppose the random variable Z follows a standard normal distribution. Then the value of P(-2.21 < Z…

A: According to the given information, we have P(-2.21&lt;Z&lt;-1.39)

Q: Find the mean and variance of the following discrete random variable distribution. ?    ?(?) 0…

A:

Q: Suppose the random variable Z follows a standard normal distribution. Then the value of P (Z< -3.39)…

A: Let Z be the standard normal variable with mean μ=0 and standard deviation σ=1 Z~N(0,1)

Q: If P(-2 <Z <k) = .6, where Z is a standard normal random variable, what is the value of k?

A: We need to find k such that

Q: If X does not have a normal distribution, which of the following is true about the shape…

A: This is based on central limit theorem.