Let x , X, ............ X be a random sample drawn from a given population with mean u and variance o2 show that sample mean x is an unbiased estimator of population mean µ, E ( x ) = µ.

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A: Ans#- Given P = 45%   = 0.45  0f consumers prefer to purchase electronics online.             You ra...

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A: We have given that  Sample size n =25 Population mean μ =48.7 Population standard deviation =9.2  

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A: Given information: Year Month Rate(%) 2014 January 7.7 2014 February 8.2 2014 March 8.9 ...

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A: The measure of central tendency provides a measure about the center of the set of the observations.

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A: Given information:   Salaries A 33000 A 34500 A 36000 A 43500 B 33000 B 33000 B 36...

Q: 7. Which of the following values can serve as the values of a probability distribution? A. P(1) = 0....

A: Ans#7- Which of the following  is a probability distribution

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Q: [Data Set: L06096] A random sample of n = 6 observations from a normal distribution resulted in the ...

A: Given data is8,2,3,7,11,6sample size(n)=11

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Q: Example 7-18. Show that eitx =1+ (eit - 1) x(1) + (eit – 1)². T+.. x(2) + (eit – 1)* . r! where xr) ...

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Q: Find the midrange for the given sample data. Listed below are the amounts of weight change (in pound...

A: Midrange = (Maximum + Minimum) /2

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Q: Let X1,..., X, be a random sample (i.i.d.) following Gamma(2, 3) for some unknown pa- rameter B > 0....

A: plz upvote me ?? @solution::::    

Q: The lifetime of disc brake pads varies according to a normal distribution with mean µ = 50,000 miles...

A: We have given that.   X~N( μ , ?^2 )   μ =50000 , ? =3000 , n=9  

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Q: Construct the confidence interval for the population mean μ.   c=0.90​, x=15.5​, σ=10.0​, and n= 80 ...

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Q: Answer D E and F please! Show work!

A: Given that  n=13 , p=19%=0.19 , q=1-p=1-0.19=0.81 X~Binomial(n=13,p=0.19) Probability mass function ...

Q: Find the area between z = -2.86 and z =-1.84

A: The z-scores are -2.86 and -1.84.

Q: /For the below frequency distribution table calculate all the below reequipments. Class Frequency 2-...

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for you...

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Q: Suppose the age that children learn to walk is normally distributed with mean 12 months and standard...

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Q: In a survey, 11 people were asked how much they spent on their child's last birthday gift. The resul...

A: Givensample size(n)=11Mean(x)=50.7standard deviation(s)=17.2confidence interval = 99%

Q: Consider a game of rolling a single die, with the outcome as the random variable X. A player gains $...

A: apply the simple concept of expectation and define the random variable   X as proposed.

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Q: Refer to the given problem in answering numnbers 6-8. 6. The random variable Y representing the numb...

A: We have given that  Probability mass function.  Y 0 1 2 3 4 P(Y) 1/10 3/10 3/10 2/10 1/10 I ...

Q: A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 68 specim...

A: We have given that,  Sample mean (x̄) = 39.3, standard deviation (s)= 7.3 and sample size (n) = 68 T...