A project's profit (in thousands), is a random variable with normal distribution. The variance equal to the cube of the mean. The probability of the project loss (negative profit) is 3.01%. The expectation of the profit is:

Q: The effects of a weight loss drug are standard normally distributed where negative data values…

A:

Q: The mean weight of an adult is 62 kilograms with a variance of 144. If 195 adults are randomly…

A: Population mean=M=62 Population variance=S2=144 Population standard deviation=√S2=√144=12 Sample…

Q: Given a binomial variable with a mean of 30 and a variance of 21, what is p?

A: X~Binomial(n , p) Mean=30, Variance=21

Q: The monthly returns on a stock follow a normal distribution with a mean return of 2% and a standard…

A: From the provided information,

Q: Find the mean and variance for the binomial distribution, P=0.37,n=22

A: Answer: From the given data, p = 0.37  and  q = 1 - p = 1 - 0.37 = 0.63 sample size ( n )= 22

Q: Research suggested that the distribution of amount of dissolved solids (D) at wastewater treatment…

A: D~lnNμ,σ and E(D) = 10260CV(D) = 40%

Q: Question-1) The serum cholesterol levels of a certain population of boys have a mean of 170 mg/dl…

A: Mean()=170standard deviation()=30

Q: In a Binomial distribution mean 4 and variance is 2. Find the mode of %3D Binomial distribution.

A: Given that Mean = 4, Variance = 2 Find Mode = ?

Q: Jacob helped his younger sister create a gameboard spinner. The spinner has a 53% chance of landing…

A:

Q: The variance statistic is an unbiased estimator of the population variance.

A: here  ,  suppose population variance is σ2 sample variance is s2

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: Let X = distance in feet for a fly ball. Use excel formula "=NORM.S.INV(0.8416)" to find the…

Q: The population variance is the square of the sample standard deviation  True  False

A: From the provided information, The statement is that the population variance is the square of the…

Q: Find the mean and variance for the binomial distribution, P=0.56 and n= 8

A: Number of trials n=8 Success of probability p=0.56 X~binomial (n,p)

Q: A z-score indicates how many variances a value is above or below the mean. True False

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: use a ti84 device to solve. A quality control expert at Glotech computers wants to test their new…

A: Given: X~Nμ, σ The value of n is 121. The value of μ= 85 The value of σ is estimated as, σ = 49 = 7…

Q: Complete the table below and find the variance and standard deviation of the ff. probability…

A: Given: x P(x) 1 3/10 2 1/10 3 2/10 4 2/10 25 2/10

Q: A newsstand manager is tracking Y, the number of weekly magazines left on the shelf when the new…

A: Given: The probability distribution of Y is Y P(Y=y) 3 13 7 14 10 13 12 112 E[X] =…

Q: A grocery​ store's receipts show that Sunday customer purchases have a skewed distribution with a…

A: From the provided information, Mean (µ) =29 Standard deviation (σ) = 21 Sample size (n) = 307 For…

Q: An asset has an average return of 11.45 percent and a standard deviation of 23.04 percent. What is…

A: Given information- Mean = 11.45% Standard deviation = 23.04% We know that- A probability of 16%…

Q: Find the mean and variance for the Binomial distribution, P=0.36 and n = 33

A: Answer: From the given data, P = 0.36  and  n = 33

Q: An operations manager is studying the failure of equipment in a manufacturing facility. He knows…

A: Given, An operation manager is studying the failure of equipment in a manufacturing facility. He…

Q: Derive the negative MGF of binomial distribution

A: We have to derive mgf(moment generating function) of binomial distribution.

Q: Find the mean and variance for the binomial distribution,  P=0.45 and n=12

A: Answer:- Given, Sample size, n = 12 Probability of success on a trial, p = 0.45 Using formulas,…

Q: The probability that it snows in a particular city on any given winter day is 13%. What is the…

A: The probability that it snows in a particular city on any given winter day is 13%.  The number of…

Q: Eagles always lay three eggs at a time. The number of eggs that hatch is described by the following…

A: Let X be the random variable having probability mass function is  X 0 1 2 3 P(x)  0.1 0.3 0.4…

Q: examples of a normal distribution questions.

A: 1)

Q: The purchase value of transactions at a grocery store is normally distributed with a mean of $244…

A: Here, µ= 244, σ2= 4624. Thus,  X~ N (244, 4624).

Q: An electronics store sells a particular model of a laptop computer. There are only four laptops in…

A:

Q: The expected value of a random variable X that is denoted by u is called its a .variance b.mean C.…

A: The expected value of a random variable X that is denoted by u is called its ?

Q: The number of hours it takes for symptoms of a viral disease to show from the time of infection…

A:

Q: II. Consider the data from two samples displayed in the two histograms: Sample A Sample B 30 30 25…

A:

Q: Random samples of a Gaussian distribution will fall within two standard deviations of the mean with…

A: Concept:  68% of the data is within 1 standard deviation (σ) of the mean (μ), 95% of the data is…

Q: Identify if its true or false For any normal distribution, the probability that the random variable…

A: Out aim is to identify the statement is true of false

Q: ose return is normally distributed with mean of 8% and a standard deviation of 5%. A. Determine the…

A: When the percentage of return is less than 0% the person will loose money.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.