1. P(X) X · P(X) X - 4 (X – µ)² (X – µ)² · P(X) 2 1 3 10 1 3 10 What is mean of the probability distribution?. What is variance of the probability distribution? What is the standard deviation of the probability distribution?

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A: Given,sample size(n)=20mean(μ)=115standard deviation(σ)=39.9

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Q: Suppose for a life aged 40, we know 1–t40+t = 0.01 · (1 – t), te [0, 1]. t e [0, 1]. Calculate

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A: Solution-: We select the symmetric distributions from given distributions?

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Q: The overhead reach distances of adult females are normally distributed with a mean of 205.5 cm and a...

A: Given: Mean,μ=205.5Std deviation,σ=8

Q: A) has a mean öI 100 and a standar deviation of 10. What is the probability that X will be smaller t...

A: We have given that.   X~N( μ , ?^2 )   μ =100 , ? =10   Z-score =( x - μ )/?

Q: Construct a frequency distribution using the ages of 50 richest people in the world in 2009. Using 8...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a ti...

Q: When the mean, median and mode are of the same value the distribution should appear symmetric 50 40 ...

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Q: 1. Let Z be a random variable with a standard normal distribution. Calculate: P(Z ≤− 2.28 or Z ≥ 0....

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A: A normal distribution (X) has a mean of 100 and a standard deviation of 10.

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Q: NORMAL DISTRIBUTION Find P(z≥-.35)

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Q: nis question. will rate So ppose we haue the following measorements foo the pippeo leng th of adethe...

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Q: The area of the shaded region is (Round to four decimal places as needed.)

A: Given the value of z=0.68 As we know that the area under the standard normal curve is given by: P(Z&...

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Q: 1

A: First I want to convert dot plot in data. X frequency (f) 0 4 1 3 2 5 3 2

Q: Let A and B be two events such that 0 < P(A) < 1. If P(B|A) = P(B|Ac), prove mathematically (not int...

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Q: Consider the following question posed to Marilyn vos Savant in her weekly newspaper column, “Ask Mar...

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Q: Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sa...

A: Given,sample size(n)=13mean(x¯)=$59population standard deviation(σ)=$7.5

Q: Let X, Y ~ N(μ, σ2) be independent. Does X+Y and 2X have the sample distribution? Explain.

A: Result used  If X and Y ~ N(μ, σ2) aX+bY~N(aμ+bμ, a2σ2+ b2σ2)   

Q: The average wage for bank managers in a certain city is $91,900 per hour with a standard deviation o...

A: Given that  X~N( μ = 91900 , ? = 24300) μ = 91900 , ? = 24300 Z-score =( x - μ )/?

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