3. The probability of a biased dice landing on 6 is 0.4, Find the mean and variance of the number of

Q: Find the odds in favor of an event and odds against event S.  For Samsung ships 23.5 percent of the…

A: A: Samsung shipsP(A)=23.5%=0.235P(Ac)=1-P(A)=1-0.235=0.765

Q: real estate agent’s rate of success to make a sale among his customers is 20%. In a normal workweek,…

A: From the given information we find the solution.

Q: A quality-control manager was concerned about variability in the amount of an active ingredient in…

A: The sample size is For next situation,The sample size is The objective is to find the probability of…

Q: Suppose a population has three values 13, 17 and 24. What is its variance?

A: Given: n=3 The mean of the data is obtained as below: Mean=∑xn=13+17+243=543=18 The mean is 18.

Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

Q: 5. A student plans to go sledding on the first snow day in December. The chance of snow on any given…

A: The given problem can be solved using the binomial distribution.  The formula of variance for…

Q: Find a 90% confidence interval for the population mean, if the sample size is 58, the sample mean is…

A:

Q: It's estimated that only abe probability that only 10 pe

A: Introduction: The formula for the binomial distribution formula: P(x)=nxpxq(n-x)

Q: 2) If all of the values in a set of data were doubled, what would happen to the variance?

A: We need to use the concept of variance.

Q: Twelve percent of U.S. employees who are late for work blame oversleeping. You randomly select four…

A:

Q: If four coins are tossed simultaneously, what is the probability distribution of the random variable…

A: From the provided information, Total outcomes tossing four coins simultaneously = 42 = 16

Q: Illustrate different types of sampling (Probability & Non Probability) with real life examples.

A: Probability & Non probability Sampling

Q: A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being…

A: A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being…

Q: a. [3] What is the probability that V runs a race in less than 14 seconds? b. [3] What is the…

A: Given:  V , W and P are three independent and normally distributed.  E( V) = 15 E( W)= 16.2 E( P)=…

Q: Give conditional variance.

A:

Q: The diameters of ball bearings are Casteel Clistributed normally The mean diameter Ps 89 millimeters…

A: Pobability calculated uisng R command

Q: The variance of the scores on a skill evaluation test is 123,201 with a mean of 1528 points. If 343…

A:

Q: Kathryn has classes 4 days a week. She attends the class 4 days a week 60% of the time, 3 days 20%…

A: Given: Kathryn has classes 4 days a week.  She attends the class 4 days a week 60% of the time, 3…

Q: study found that 1.21% of Social Security recipients are too young to vote. If 800 Social Security…

A: Given that  A study found that 1.21% of Social Security recipients are too young to vote. P = 0.0121…

Q: 2. If the mean and variance of a Binomial distribution are 9 and 6 respectively, find the number of…

A: Step 1: Start with the formulas for mean and variance of a Binomial distribution:Mean (μ) =…

Q: Let Y be the number of distinct numbers showing when three fair dice are rolled. Find the pmnf and…

A: Note In question it's mentioned PMNF Which is wrong term are misspelled during typing.  It's PMF.

Q: Customers arrive at a checkout counter in a department store at an average of 7 customers per hour.…

A: The given information is about the arrivals in a checkout counter in a store. The average number of…

Q: Ques 3) The probability of success of random variable X is 0.6. X follows a geometric distribution.…

A:

Q: When the population is N=9 and the scores are 4,2,0,5,3,2,1,7,3 what is the SS, variance and…

A:

Q: What is the variance of the following data( 1, 2, 3, 4, and 5)?

A: According to the given information in this question We need to calculate the value of variance

Q: In a poisson distributed character, the mean number of events is 6. Find the variance.

A:

Q: probability distribution of the number of boys in a family with 4 children

A: Given that  A family with 4 children. = n = 4 The probability distribution of number of boys in a…

Q: 3. We throw a dice 10 times consecutively, obtaining the results: 1, 1, 1, 3, 3, 4, 4, 5, 6, 6.…

A: Given: Number of observation, n=10 Result, X 1 1 1 3 3 4 4 5 6 6

Q: Suppose bob flips a fair coin 100 times.Let X be the number of heads he gets.What is Variance of X?

A: For a fair coin the probability of getting head= 0.5X=number of headsn=sample size=100p=probability…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: A racing car consumes a mean of 103 gallons of gas per race with a variance of 36. If 38 racing…

A: The probability of the sample mean would be greater than 101.5 gallons is 0.9382 and it is obtained…

Q: Suppose X is an outcome in throwing a fair die. Find the mean and variance

A: Given X is an outcome in throwing a fair die and we want the mean and variance.

Q: The weights of steers in a herd are distributed normally. The variance is 40,000and the mean steer…

A: Consider X be the random variable that represents the weights of steers in a herd. X is normally…

Q: the distribution of sample means consists of the

A:

Q: The weights of steers in a herd are distributed normally. The variance is 10,000 and the mean steer…

A:

Q: what is the source of variability in the random variable?

A: n=1000x=277

Q: Let the random variable x represent the number of girls in a family of 3 children.  Construct a…

A: Given that the random variable X represents the number of girls. n represents the total number of…