replacement, what is the probability that the roots of the equation x²+²x+2=0 are real

Q: X:   10 20 30 40 P(X): 0.25 0.25 0.4 0.1 Find the mean of the above probability distribution?

A: X 10 20 30 40 P(X) 0.25 0.25 0.4 0.1

Q: What is the expected value of this policy for the insurance company?   What is the expected value of…

A: A homeowner is considering buying a one-year fire insurance policy. They are told that there is a…

Q: An oil drilling company is considering 2 sites for its well. The probabilities for getting a dry, a…

A: An oil drilling company is considering 2 sites for its well. Site A and Site B.

Q: Suppose the returns on long-term corporate bonds and T-bills are normally distributed. Assume for a…

A: The mean and standard deviation for long-term corporate bonds are 6.9 and 9.9 percent, respectively.…

Q: Given the probability that "she's up all night 'til the sun" OR "she's up all night for good fun" is…

A: Answer:- Let, Event X = "she's up all night 'til the sun" Event Y = "she's up all night for good…

Q: Which of the following events occur with a probability of zero? C. A Product that is neither foreign…

A: Here the given statement is    A Product that is neither foreign nor domestic. We have to identify…

Q: Each member in Super Fancy VIP club is assumed to successfully refer a friend to join the club at an…

A: a) States: The state of the system is defined by the number of members in the club, which can range…

Q: The table shows the educational attainment of a population, expressed in millions. Find the odds in…

A: From the provided information, Total members = 173 Total members with four years (or more) = 42

Q: 63. Let the random variables X~ N(ux, o) and Y~ N(μy, o) be jointly continuous normal random…

A: Since here:

Q: Which of the following events occur with a probability of zero?

A: A shape that is neither a circle nor a square can take on many different forms, such as a triangle,…

Q: P(|X|>1.3)

A: In statistics, the t-distribution is a probability distribution that arises in hypothesis testing…

Q: The Apollo module has five components: the main engine, the propulsion system, the command service…

A: Answer: From the given data, The Apollo module has five components, The main engine, the propulsion…

Q: 3) Pat has 5 white beads and 1 black bead in her bag. She asks two friends about the probability of…

A: Here since only one bead is drawn, the probability will be  number of black beads divided by the…

Q: For X~ x²(7), what R code will calculate the following? 1. P(X0.47) 3. P(0.7<X<1.2)

A: 1) To calculate P(X &lt; 1.42) for X ~ χ^2(7), we can use the pchisq() function in R, which…

Q: Selling candies is one of your passion in your teenage life. The flavors left are 6 types of mints,…

A: The probability that he will get exactly 4 types of toffees is obtained below as follows:   From the…

Q: 3) The mean of virus found probability that a sample h (4 significant number)

A: Q.3: The mean of the virus found in  Gombak in a sample of 3 liters of water is 5 Here the 6 liters…

Q: (Bonferroni's Inequality) P(AB) ≥ P(A) + P(B) − 1

A: We have to proof that  P(AB)≥P(A)+P(B)-1

Q: Give the probability in decimal form. The campus vets club is having a raffle and is selling 1500…

A: The total number of selling tickets=1500 tickets The number of tickets bought by the people on the…

Q: A. Give an example of a simple event. Choose the correct answer below.

A: Do males or females feel more tense or stressed out at work? A survey of employed adults conducted…

Q: Given the following data for an imaginary superhero universe: Flying Telepathy Super Strength 66 74…

A: We have given the following table   Flying  Telepathy  Super strength  Total  Female  14 66 70…

Q: The letters in the word APPLE are arranged in a row. How many unique arrangements are there of the…

A: We have given that Word "APPLE"

Q: the probability of the pointer landing in a brown region.

A: There are total 10 region in given spinner.  3 are brown , 3 are red , 2 blue and 2 yellow regions.…

Q: (a) What type of random variable is X₁? Specify all parameters. (b) What type of random variable is…

A: (a) Xi is a binomial random variable with parameters n = 10 (number of trials) and pi (probability…

Q: The probability that the oldest is a boy and the youngest is a girl, given that there is at least…

A: Here  Family has 3 children with at least one boy and one girl.

Q: I would like to know why the approach to the problem below is wrong: When coin A is flipped, it…

A: The problem provides information about two coins, A and B, and their probabilities of landing on…

Q: Suppose the transition matrix for a Markov process is State A State B State A State B 1-p 1 }], р 0…

A: P=paapbapabpbb=1-p1p0 Here, the column sum is one. Since the system is in state A at time 0…

Q: There are 10 males and 18 females in the Data Management class. How many different committees of 5…

A: In order to form a committee of 5 students with at least 2 males, we can consider two cases: Case 1:…

Q: Find the indicated probability using the standard normal distribution. P(Z 1.24) Click here to view…

A: We need to find the value of Pz&lt;-1.24 or z&gt;1.24 from the standard normal table.

Q: Hypergeometric Distribution Bloomberg L.P. lists the top 20 U.S. companies by revenue. Walmart…

A: Of the 20 companies, 8 are in some type of electronics related business. 6 firms are randomly…

Q: held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with o…

A: Sample size n =100 Sample mean=58.3 Population standard deviation =3

Q: For questions 59-62, consider the following experiment: Suppose the location of a particle in the…

A: Here 0&lt;x&lt;1, 0&lt;y&lt;x2 Since the function f(x,y) is the joint pdf so  ∫01∫0x2f(x,y)dydx…

Q: Part 4) Answer the questions below related to probability of the given situation(s). Hours of TV 0-4…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: How many ways can you order the letters of ACCURACY if it ends with exactly 2 C’s

A: We have given the word ACCURACY  Here we have tell How many ways can you order the letters of…

Q: I have a question about part(b). I know that F(x)=P(X

A: As per the Bartleby guildlines doing question as asked by student....   The probability density…

Q: to primary career motivation. The following table shows the results. If one of these students is to…

A: Total=100  Female and motivated primarily by creative=17

Q: E[X] = 1 and Var(X) = 5, use definition of variance and properties of expectation to find (a) E[(2 +…

A: E[X] =  1  Var(X) = 5

Q: Find the indicated z-score shown in the graph to the right. The Z-score is 0. (Round to two decimal…

A: We have given the following curve

Q: i. Construct a contingency table to represent the information above. One of these countries is…

A: Tiffany obtained data about the gross domestic product (GDP) and the birth rate for 170 countries.…

Q: Find the value of c and the cumulative distribution function Fx of X. 1. Find the value of Fx (-6).…

A: Here given pdf of random variable x

Q: Given that P(A) = 0.10, P(B) = 0.17, and P(A and B) = 0.0230, are events A and B independent?

A: P(A)=0.10P(B)=0.17P(A and B)=0.0230

Q: A law firm employs three types of lawyers: junior lawyers, senior lawyers, and partners. At the end…

A: (a) The transition matrix is: The rows and columns correspond to the status of the lawyer at the…

Q: How many ways are there to draw three winners out of 200 people

A: There are total 200 people involved.  Here order for  selection is matter so we will use…

Q: Without using R or any technology, for what value x does P(X<x) = 0.5? How do you know?

A: Let X ~ N(150, 12) μ=150 σ=12 The standard normal variate is defined as: Z=X-μσ~N(0,1)

Q: For a binomial random variable X, n = 15 and p= 0.60. Find P(x= 5)

A: Answer: From the given data, sample size (n) = 15 p = 0.60 X~ Binomial distribution (n,p)

Q: Q9. Two four-sided pair of dice are thrown with equally likely face values 1, 1, 2, 3. Let X denotes…

A: Two-four sided pair of dice are thrown with equally likely face values: 1, 1, 2, 3. X denotes the…

Q: Using the same data above. A.Compute and interpret the mean of the random variable x. B. Compute…

A: Consider the following table: x (games played) Frequency P(x) x2P(x) 4 15 0.2027 3.2432 5 16…

Q: Given P(E or F) = 0.72, P(F) = 0.43, and P(E and F) = 0.09, what is P(E)?

A: Given P(E or F) = 0.72, P(F) = 0.43, and P(E and F) = 0.09

Q: What is the probability of getting the exact order of Tails, Heads and Tails in three consecutive…

A: Lets assume a fair coin have been tosses the probability of getting Head or Tail will be =0.5

Q: d. From the estimated coefficient of the variable edu, how do you conclude about the impact of…

A: d. The estimated coefficient of the variable edu is positive and statistically significant at a very…

Q: Let f(x): k(9x - x²) if 0 ≤ x ≤ 9 and f(x) = 0 if x 9. (a) For what value of k is f a probability…

A: f(x)=k(9x-x2)   ; 0≤x≤9f(x)=0                  ; x&lt;0 or x&gt;9