distributed as a standard normal variable. Calculate the following probability using Excel. Note the sign change. Round your answer to two decimal places, e.g. 0.49. Find the value of a such that Pr(Z > a) = 0.773.

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Q: find the mean of this probability distribution, round your answer to one decimal place. X 0,1,2,3…

A: x P(X) x*P(x) 0 0.3 0 1 0.2 0.2 2 0.15 0.3 3 0.35 1.05     ∑x*P(x) = 1.55

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Q: P(-1.99 < z < 0) Answer 囲 Tables 画 Ke" Keyboard She

A: Given : p ( -1.99 &lt; z &lt; 0 )

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A: Mean = 26 Standard deviation = 3.4

Q: 1. Does each of the following tables represent a probability distribution? Explain why or why not.…

A: Given that : Random variable x and their pdf  is given .  By using the properties of probability…

Q: Use the standard normal  distribution table to find the area. Left of z=2.0

A: Given: z-value = 2.0

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Solution: From the given information, X follows normal distribution with mean µ=24 and a standard…

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A: Given that,

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Q: use calculator me: Band: Due Date: Let x be a random variable that represents the weights in…

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Q: Probability Reviewer Ratings 0.5- 0.4- 0.3- 0.24 0.1 0.021 0.0- 0.085 N2 0.218 0.245 13 Rating 0.431

A: Given that,From the histogram, the probability distribution table on reviewer ratings is given…

Q: If  z  is a standard normal variable, find the probability. P>z0.58     0.2327     0.2483…

A: Given information- We have given the standard normal distribution. We have to find the probability-…

Q: Find the probability using the normal distribution. Use a TI-83 Plus/TI-84 Plus calculator and round…

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Q: Find the mean, variance and standard deviation for the probability distribution given below. Give…

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A: The normal distribution is defined by                           fx =1σ2πe-12x-μσ2 where           μ…

Q: The table below shoes the number of dogs per household in a neighborhood 0 1 2 3 4 5     0.686…

A: a).The expected value (mean) of the probability distribution can be obtained as follows:

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A: we hvae to find the probability.:_   The probability that Z is less than −0.25.

Q: Normal probability tables typically list z-score values between -3.49 and 3.49 O True O False

A:

Q: Calculate the standard deviation o of X for the probability distribution. (Round your answer to two…

A: Obtain the standard deviation of X for the probability distribution. The standard deviation of X for…

Q: is a standard normal variable, find the probability. P>z0.68     0.2177     0.3156     0.2483…

A: X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: . P(0<z<1.86)

A: Here use standard normal distribution with mean zero and standard deviation 1.Standard normal random…

Q: Find the specified probability. Round your answer to four decimal places, if necessary. P(0 < z <…

A:

Q: Find the value of t0.025 for a t-distribution with 14 degrees of freedom. Round your answer to three…

A: The degrees of freedom is 14, and the level of significance is 0.025.