Determine the mean, the variance, and the standard deviation of the following discrete distribution. P(x) 1 0.222 0.321 3 0.172 4 0.148 0.137 (Round the intermediate values and final answers to 3 decimal places, e.g. 2.153.) Mean, u = Variance, o2 = Standard deviation, ơ =

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A: The data item is normally distributed with     Mean, m = 900    Standard deviation, s = 30   Then,…

Q: In a random sample of 10 cell phones, the mean full retail price was $506.70 and the standard…

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A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

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A:

Q: z-score: The z-score corresponding to an observed value tells us the:     A. value of the…

A: The z-score is the measure of how far the standard deviation away from the mean (Above/ below the…

Q: Mean=___________ Standard deviation=________________ Varianace=______________ oops now you…

A: Given : x 25.9 40.1 44.3 40.2 31.7 48.9 47

Q: A normal distribution has mean u = 56 and standard deviation o = 20. Find and interpret the z-score…

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A: Here use basic of  normal distribution

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Q: Ages of Gamblers The mean age of a sample of 24 people who were playing the slot machines is 50.6…

A: Given,n1=24n2=32x1=50.6s1=6.8x2 =55.6s2=3.2α=0.10H0:μ1=μ2H1:μ1<μ2

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A: xx26.947.617.251.849.284.6412.4153.768.673.9625.6655.366.542.25

Q: Mean and standard deviation of a distribution are 16 and 2 respectively. At least what percent of…

A:

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A: The provided information is  The mean and standard deviation is  µ=200 σ=40 P(X<120)=?…

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A: given data, random variable x represent the number of emails received at a help desk in one hour…

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A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: e heights of people in a certain population are normally distributed with a mean of 68 inches and a…

A: Given that.   X~N( μ , ?^2 )   μ=68     , ?=3.8   , n=43

Q: Mean= Variance= B Standard Deviation= 19 20 21 Find the mean, variance, and standard deviation of…

A: Given that  Probability distribution table x 19 20 21 22 23 P(x) 0.24 0.23 0.31 0.11 0.11…

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Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: A population has a mean u=85 and a standard deviation a=22. Find the mean and standard deviation of…

A: Assume that the variable of interest is X.

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A: For the distribution of internet service fees (which is stated to be not normal), it is given that:…

Q: Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 87 minutes…

A: We have given the waiting times in the emergency room.For additional treatment-For discharged-

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A: Given that, A population has mean μ=81 and standard deviation σ=36. Sample size n=81

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A: Given μ=19.4x=22.8

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A: The mean salary of an employee for the 5 day work week is $1,250 and the standard deviation is $129.…

Q: A random sample of 100 selected from a population with a standard deviation of 10 yielded a mean =…

A: Given that, Mean = 225 Standard deviation = 10 Sample size = 100

Q: uppose the scores of students on a Statistics course are Normally distributed with a mean of 596 and…

A: