For a normal variable X~ N(= 75.7, o = 12.8), find the probability P(X < 68.6): P(X < 68.6): places) - Question Help: Message instructor Submit Question Video 1 Video 2 Post to forum Jump to Answer (Round the answer to 4 decimal Video 3 Written Example 1 0

Q: Suppose we sample 4 values randomly and independently from the standard normal distribution. What is…

A: By using the given data:Sample size [n] =4Favorable cases [x] =-2.2Mean =0Standard deviation =1

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A: Answer: From the given data, X follows binomial distribution, sample size (n) = 10 P = 0.25  and q =…

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A: Solution: Let x be the IQ score of person has normally distributed with meanμ=100 and standard…

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Q: Find the probability of a value in the standard normal distribution being greater than −0.35.

A: Draw the normal curve and shade the area to the right of z=-0.35.

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Q: X is a random variable of student score approximately normal with mean μ = 60 and a standard…

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Q: Find the probability that a random sample of 35 observations, from a normal population with varia o²…

A: Given information:

Q: What do you mean by Multivariate Distributions?

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Q: Lifetime of one model of lightbulb is normally distributed with a mean of 1900 hours and a standard…

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A: The characteristic function of a normal random variable is a complex-valued function that completely…

Q: Let Z be a standard normal random variable. Calculat (a) Pr(-1.3 < Z < 0) (b) Pr(.25 s Z)

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Q: random sample of size 50 is taken from a geometric distribution with a parameter 0.45. Find the…

A: We know that The pmf of Geometric distribution is P(X=x) = qxp ; x= 0,1,2,. . .

Q: True or false? The probability of a Z score being less than 0 is 84%.

A: Solution

Q: The sum of  deviation around the mean always equal (a) the mean (b )one (c )Zero (d) The…

A: We have the  statement about the  sum of deviation  around the mean.

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Q: Explain the Normal Distribution? Also Define normal distribution for a single variable?

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Q: the actual dose administered is normally distributed with mean μ mg and variance σ 2 = 2.6 mg2.

A: It is given that the actual dose administered is normally distributed with mean μ mg and variance σ…

Q: Let Y be a random variable with mean zero and variance o². What do we know about the quantity 1 (Yi…

A: Given that,  Y = 1n∑i=1nYi  Now,  1n∑i=1nYi - Y = 1n∑i=1nYi - 1n×nY = Y - Y = 0

Q: Negative correlation coefficient indicates that the movement of the variables are in: Opposite…

A: Negative correlation coefficient indicates that the movement of variables are in opposite direction.

Q: Question [5] The number of calories in a salad on the lunch menu is normally distributed with mean =…

A: Given data,Mean μ=100Variance σ2=16sd σ=4

Q: Continuous random variable, x, comes from a normal distribution with = 2000 and 0 = 300. What value…

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A: The question is about normal dist. Given : Person 1 ( X ) = 1 hr. , z = -0.5 Person 2 ( X ) = 3 hr.…

Q: Properties of a normal distribution then explain it in own words

A: Please find the explanation below. Thank you

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Q: A random variable X has only two values a and b with P(X = a) = p , P(X = b) = q (p + q = 1). Find…

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Q: Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 104 and…

A: Given that: Population mean, μ=104 Population standard deviation, σ=5

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Q: A random variable X is normally distributed with unknown mean u and variance o². If P(X > 9.5) =…

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