Q2: A random variable X has a mean = 8, a variance o² = 9, and an unknown probability distribution. Find P(X-8≥6).

Q: ume that x has a normal distribution with a-26%. A random sample of 17 Australian bank has a sample…

A: The question is about hypothesis testingGiven :Population mean dividend yield (  ) = 6.5 %…

Q: About 77​% of all female heart transplant patients will survive for at least 3 years. Eighty female…

A: The probability that the sample proportion surviving for at least 3 years will be less than 72​% is,

Q: Birds arrive at a feeding table independently, at an average rate of six per hour. a Find the…

A: Given::-- Birds arrive at a feeding table independently, at an average rate of six per hour.

Q: Consider a binomial random variable X with n = 5 and p = 0. 40, where X represents the number of…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: If the range of X is the set {0,1,2,3,4} and given that each outcomes are equally like to occur,…

A:

Q: What is the probability that the mean childhood asthma prevalence for the sample is greater than…

A: Given: As the sample mean is an unbiased estimator of the population mean, we will use the mean…

Q: The average number of work emails received in a day is 27.  If the variance is known σ2 = 3.45…

A: GivenMean(μ)=27vatiance(σ2)=3.45standard deviation(σ)=3.45=1.8574

Q: x is a normally distributed random variable with a mean of 3 and a variance of 4. Find the…

A: Given that X follows a normal distribution with mean=3 and variance=4. So standard deviation=4=2We…

Q: Solve the problem. 1) The random variable x represents the number of credit cards that adults have…

A: The question is about discrete probability distribution.Given :

Q: The mean of a binomial distribution is 3 and variance is 3/2. Find the ility of (i) 0 success (ii) 2…

A: 5 Mean of binomial distribution is 3 Variance=3/2 That is, np=3np(1-p)=323(1-p)=321-p=12     p=12…

Q: The manager of a stockroom in a factory knows from her study of record that x, the daily demand (…

A: Properties of probability: The probability value lies between 0 and 1 (inclusive). That is 0 ≤ P(x)…

Q: Suppose that you draw a random sample from a population where you know the population mean is 36 and…

A:

Q: On any given morning, Joe eats 0, 1, or 2 eggs, with probabilities 0.2, 0.5, and 0.3, respectively,…

A:

Q: Jessica hypothesizes that giraffes will look longer at human infants than at adults. In her zoo, she…

A: It is given that Jessica hypothesizes that giraffes will look longer at human infants than at adults…

Q: Find the variance of a binomial distribution when p = 73% and n = 205. (

A: Note :- Variance=np(1-p) in our question Given that p=73%=.73 And n=205 So

Q: Find the variance of the binomial distribution for which n = 300 and p = 0.93

A:

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

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: (b) What is the probability that the sample mean is within 1 inch of the population mean for…

A: The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a…

Q: Q3: A business measurement is a random variable defined by a normal distribution. The variance of…

A: The variance of this population is 2 .The sample variance for 21 randomly selected observations from…

Q: A company is producing christmas light strings containing 15 small bulbs. Suppose the success or…

A: Given that a company is producing christmas light strings containing 15 small bulbs.The success or…