Consider the probability distribution for number of children in local families. x P(x) 0 0.03 1 0.11 2 0.36 3 0.33 4 0.17   Find the mean number of children in local families       ["", "", "", "", ""]  Find the standard deviation of the number of children in local families       ["", "", "", "", ""]  Would 4 children be considered a significantly high number of children?       ["", "", "", "", ""]

Q: 34. Find the mean and variance of the distribution P[X=x]=2x, x=1,2,3....

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Q: A population of scores has μ = 25 and σ = 1. If 3 points are added to every score in the population,…

A: From the given information, Consider , X be the random variable which denotes the scores. Ex=μ=28σ=1…

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Given information- We have given that x be a random variable that represents red blood cell count…

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Given, Let X= 4.9, 4.2, 4.5, 4.1, 4.4, 4.3

Q: 3.The following table contains the probability distribution of the number of traffic accidents daily…

A: From the provided information, The probability distribution table is as follow: Number of…

Q: Find the mean and standard deviation for the number of girls in groups of 14 births when p = 0.5* O…

A: Given that ,  n=14  and p= 0.5  i.e. q=1-p = 1-0.5 = 0.5 We have to find mean and standard deviation…

Q: Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75…

A: We have to fill given blank in probability distribution table...

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75…

A:

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Answer Given The population mean= 4.78This is left-tailed test.

Q: If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then I.Q. of 130 will have…

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Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: a)

Q: Accordi v the historical data, the life expectancy in the United States is less than or equal to the…

A: Given: x1 =77.8s1=7.4n1 =250x2 =76.1s2 = 6.2n2 =260α = 0.01

Q: a. P( x< 50) b. P( 35 <x< 47) c. P(x 55)

A: Given: X is normally distributed with  μ=40, σ=4

Q: A population of scores has u=55 and o=15.  if 5 points are subtracted from every score in the…

A: The given data is μ = 55σ = 15 Suppose x1, x2, x3, x4, ..., xn are the data points…

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: Let X be the distance in feet for a fly ball Given mean, μ = 270 feet Standard deviation, σ=42 feet

Q: Let X be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A:

Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: (i)   Use TI-83 plus Calculator to obtain the values of sample mean and the standard deviation.…

Q: Solve the following problems. 1. The random variable x represents the number of people you meet on…

A: Given data is  x 0 1 2 3 4 P(x) 0.02 0.18 0.30 0.40 0.10

Q: Let X be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A:

Q: For a normal distribution with a mean of μ = 60 and a standard deviation of 12, find each…

A: Let us consider X be a random variable which follows Normal distribution with a mean of μ = 60 and a…

Q: Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75…

A: The mean is 75 and the standard deviation is 7.

Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

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Q: Suppose that the weight of an newborn fawn is Uniformly distributed between 2.3 and 3.9 kg. Suppose…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

A: a) Mean=E(X)=∑i(xini)∑i(ni)=0(93)+1(91)+2(60)+3(67)93+91+60+67=412311=1.32475884244Answer(a):…

Q: How many of the sample of families would fall above 2 standard deviations from the mean? A. 0 B. 1…

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Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

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Q: Suppose that human pulse rates for children over 10 and adults are approximately normally…

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Q: Let x be a random variable that represents red blood cell count (RBC) in millions of cells per cubic…

A: Given that n=6

Q: 4.The following table contains the probability distribution of the number of traffic accidents daily…

A: The data are given,

Q: A population has μ = 50 and σ = 5. If 10 points are added to every score in the population, what are…

A: Consider, (µ) = 50 and (σ) = 5 Let, X be the scores of the population. If 10 points are added to…