In a population, a parameter called "mobent" has a value of 9. If the statistic estimating mobent is unbiased, what is its expected value?

Q: What information does the mean (expected value) of a continu-ous random variable give?

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Q: What is the expected value (mean) of X?

A:

Q: Assuming the true proportion is 15%, what is the approximate probability that more than 10% of the…

A: It is given that n =750 and p =0.184.

Q: An insurance company knows that the average cost to build a home in a new California subdivision is…

A: Given that the average cost= $97,656 The probability of a wildfire destroying all the homes in the…

Q: A sample is selected from a population with a mean of 65, and a standard deviation of 15. If the…

A: The expectation and standard deviation of the sampling distribution of the sample mean are as…

Q: Based on the F obtained which is the amount of variability among the means expected by chance? Is it…

A: Introduction: It is required to identify the quantity that provides the amount of variability among…

Q: If the mean lifetime is actually 31 years, what is the probability we will reject the null…

A: From the given information, n=42x¯=30.7s=3.2 Claim: The mean lifetime of the most commonly planted…

Q: A sample of 25 observations is taken from an infinite population with a mean of 45 and a standard…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: Find the mean and standard deviation  of this random variable.

A: Define the Random Variable, X : Number of tickets bought by a individual Given that, X ~ Discrete…

Q: If the observed value is 7, the expected value is 3.5, and the standard error is 2, then the z value…

A: Here use z score  formula for Z value

Q: A sample is selected from a population with a mean of µ = 40 and a standard deviation of σ = 8 a.…

A: Given: μ=40 and σ=8. a) Here, n=4. Then,EM=μ=40 AndSDM=σn=84=82=4 Therefore, the expected value of M…

Q: what is a gaussian distribution?

A: Gaussian distribution (also known as normal distribution) is a bell-shaped curve, and it is assumed…

Q: A sample is selected from a population with a mean of μμ=65 and a standard deviation of σσ=15 . If…

A: For n=9 Expected value of M Standard error of M for n=9

Q: The expected return of a portfolio is 9.4%, and the risk-free rate is 4%. If the portfolio standard…

A: expected return = 9.4% risk-free rate = 4% standard deviation = 17%

Q: Define the concept of expected value?

A: The expected value of the random variable is nothing but the mean value of the random variable. It…

Q: What is the moment generating function of the sample mean?

A: Mgf (i)Sample mean=x⏞=Σxin=x1+x2+..+xn10…

Q: What is the expected value of a continuous random variable? What is the expected value of an…

A: Definition used:

Q: If samples of size n = 16 are selected from a population with μ = 40 and σ = 8, the distribution of…

A: Sampling distribution of sample mean: A sample of size n is drawn from the population and moreover,…

Q: What is the marginal probability of a respondent's most commonly used type of phone not being a…

A: In probability theory, an event is an outcome or a set of outcomes of a random experiment to which a…

Q: If a male person selected from the population has weight 95 kgs, what is his expected height and…

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Q: What is the expected profit if Yaster Inc. produces and sells 22,798 thingamabobs? $ Round to the…

A:

Q: An insurance company knows that the average cost to build a home in a new California subdivision is…

A: Given Information: The average cost to build a home in a new California subdivision is ​$96,618.…

Q: For a binomial random variable with a mean of 20 and 100 trials, what is the standard deviation?

A: For a binomial random variable with a mean of 20 and 100 trials, what is the standard deviation?

Q: Obtain the standard deviation of the random variable.

A: First we have to calculate the E(Y2) to find the variance and then standard deviation. It is given…

Q: What information does the mean (expected value) of a continuous random variable give?

A: Query- What information does the mean (expected value) of a continuous random variable give? Answer-…

Q: Based on the research of Ibbotson Associates, a Chicago investment firm, and Prof. Jeremy Siegel of…

A: From the available information, Population mean, Population standard deviation, Compute the…

Q: What is the expected value and variance of flight time?

A: Given that x~u (120 ,140 ) Find Expected value =? Variance =?

Q: A sample of size 65 will be drawn from a population with mean 22 and standard deviation 15. Find the…

A: Given that sample size n=65Population mean μ=22Population standard deviation σ=15

Q: The likelihood that a specified interval will contain the population parameter is referred to as

A: This is based on the definition of Confidence interval.

Q: What is the expected value of an exponential randomvariable?

A: Exponential random variable. For a positive constant k>0, the exponential density function (with…

Q: if 31% of the 18 to 29 years olds are invested in the stock market,how many 18 to 29 year olds must…

A: Given that, 31% of the 18 to 29 years old are invested in the stock market.

Q: In a binomial experiment, If the number of trials is increased, what happens to the expected value?…

A: We have given that a binomial experiment. Mean = np Standard deviation = sqrt(npq)

Q: Define bias in terms of expected value?

A: In general bias is a tendency for a statistical parameter to be overestimated or underestimated.

Q: what is the difference between the distribution of a sample, distribution of the population, and the…

A: A sample is the subset of the population taken randomly to define the characteristics of the…

Q: Although studies continue to show smoking leads to significant health problems, 20% of adults in the…

A: Given Information: p = 20% = 0.2 Sample size n = 250 Let X be a random variable which denotes the…

Q: An asset has an average return of 10.79 percent and a standard deviation of 22.71 percent. What is…

A: It is given that the mean is 10.79 and the standard deviation is 22.71.

Q: Calculate the expected value, the variance, and standard deviation where X is the number of tails…

A: X=the number of tails n=sample size=3p=probability of success=12=0.5So, X follows a binomial…

Q: A sample is selected from a population with a mean of 65 and a standard deviation of15. If the…

A:

Q: According to Harper's Index, 60% of all federal inmates are serving time for drug dealing. A random…

A: Solution: Let X be the number of inmates serving time for drug dealing and n be the sample number of…

Q: ) Find the expected number of defectives and the standard deviation.

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Q: A certain component is critical to the operation of an electrical system and must be replaced…

A: See hand written answer

Q: In a population, a parameter called "parametus" has a value of 9. If the statistic estimating…

A:

Q: Consider two data sets from sampled populations, one with a high standard deviation and one with a…

A: HERE GIVEN TWO DIFFERENT DATA SET One has High standard deviation while second has low standard…

Q: In a random sample of 2500 UWC students, 846 claimed to live in one of the campus’s residences.…

A: Solution: Let X be the number of UWC students live in one of the campus’s residences and n be the…

Q: What is the expected value of X²?

A:

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.