The random variable x represents the number of boys in a family of three children. Assuming that boys and girls are equally likely, find the mean and standard deviation for the rand variable x. X P(x) 0.125 0 1 0.375 2 0.375 3 0.125 O A. mean: 1.50; standard deviation: 0.87 OB. mean: 1.50; standard deviation: 0.76 OC. mean: 2.25; standard deviation: 0.87 O D. mean: 2.25; standard deviation: 0.76

Q: A given distribution has a population mean, μ, of 127 and a population standard deviation, σ, of 11.…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 127 and…

Q: A given distribution has a population mean, μ, of 134 and a population standard deviation, σ, of 7.…

A:

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 6.…

A:

Q: What z-score would be associated with the value x = 124?

A: Given that Mean = 133 SD = 6 And the value is X = 124

Q: A distribution of exam scores has a mean of μ = 42. If your score is X = 46, which standard…

A: we have to find which sd will give better score.

Q: A given distribution has a population mean, μ, of 121 and a population standard deviation, σ, of 7.…

A:

Q: What z-score would be associated with the value x = 143?

A: Given that Mean = 137 SD = 15 And the value X = 143

Q: A variable x has a mean, µ, of 26 and a standard deviation, o, of 2. What is the standardized…

A: Given data, Mean = 26 Standard deviation = 2

Q: A given distribution has a population mean, μ, of 118 and a population standard deviation, σ, of 8.…

A: Solution: Let X be the random variable with mean µ and standard deviation is σ. Then, the Z-score…

Q: The life span of 100 W light bulbs manufactured by a company are tested. It is found that (2 %) of…

A: The mean and variance of a binomial distribution are np and npq. Here, It is given that mean equals…

Q: X follows a normal distribution with mean 45 and standard deviation 6. The z-variate corresponding…

A: Answer : The value of the X-variate is : (c) 54.

Q: For a normal distribution with a mean of m=60 and standard deviation of s=10, find the proportion of…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A given distribution has a population mean, μ, of 106 and a population standard deviation, σ, of 7.…

A: Formula for z score: z=x-μσ Substitute 106 for μ, 7 for σ and x = 139 in z score formula.

Q: A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to a…

A: The provided information are: Population standard deviationσ=10Sample meanx¯=40Raw score (x)=70

Q: A distribution of values is normal with a mean of 50 and a standard deviation of 25. From this…

A: GivenMean(μ)=50standard deviation(σ)=25sample size(n)=31

Q: A given distribution has a population mean, μ, of 131 and a population standard deviation, σ, of 14.…

A: Given information Mean = 131 Standard deviation = 14

Q: A given distribution has a population mean, μ, of 114 and a population standard deviation, σ, of 12.…

A:

Q: A given distribution has a population mean, μ, of 116 and a population standard deviation, σ, of 8.…

A: From the provided information,

Q: A given distribution has a population mean, μ, of 113 and a population standard deviation, σ, of 6.…

A: A given distribution has; a population mean(μ)=113 and a population standard deviation(σ)=6 find…

Q: A given distribution has a population mean, μ, of 106 and a population standard deviation, σ, of 8.…

A:

Q: A given distribution has a population mean, μ, of 107 and a population standard deviation, σ, of 12.…

A: Given information: μ=107 σ=12.  x=99

Q: Suppose X = exam score and X has a normal distribution with mean 80 and standard deviation 5. Bob…

A: Given that, Mean = 80Standard deviation = 5

Q: If X is distributed normally with Expected value 187 and standard deviation 50, how many standard…

A: Thank you for posing these questions. Since there are multiple questions posted, we will answer…

Q: A given distribution has a population mean, μ, of 125 and a population standard deviation, σ, of 14.…

A:

Q: In the accompanying graph of a normal distribution, each of the two red areas represents one-sixth…

A: (A)   Determine the value of mean.   The value of mean is determined below as follows:   From the…

Q: A sample has a mean of M = 90 and a standard deviation of s = 20. b. Find the X value for each of…

A: The z-score for a particular value, X = x, is: z = (x –mean)/standard deviation   = (x-M)/S

Q: A given distribution has a population mean, μ, of 150 and a population standard deviation, σ, of 6.…

A: Distributions are of 2 types, discrete and continuous. A normal distribution is a continuous…

Q: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 11.…

A:

Q: A given distribution has a population mean, μ, of 132 and a po

A: Given information: μ= 132   σ= 12 x=174

Q: From a normally distributed population, we took a simple random sample of 700 students with a mean…

A:

Q: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.…

A: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.

Q: A given distribution has a population mean, μ, of 117 and a population standard deviation, σ, of 6.…

A: Given data, Mean (μ)=117 sd(σ)=6 If x=172 z=?

Q: A given distribution has a population mean, μ, of 147 and a population standard deviation, σ, of 8.…

A: Given information Mean (µ) = 147 Standard Deviation(σ) = 8 X = 130 z-score

Q: A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 10.…

A: According to the given information, we have Population mean = 138 Population standard deviation = 10…

Q: A given distribution has a population mean, μ, of 134 and a population standard deviation, σ, of 11.…

A: According to the provided information, we have Raw score, X = 91 μ, Population mean = 134 σ,…

Q: A given distribution has a population mean, μ, of 101 and a population standard deviation, σ, of 15.…

A: Z-score for any Raw score X is given by, Z Score=(X-mu)/sigma Where mu is mean and sigma is standard…

Q: A given distribution has a population mean, μ, of 147 and a population standard deviation, σ, of 7.…

A:

Q: In a normal distribution, x = 6 and z = 1.25. This tells you that x = 6 is ____ standard deviations…

A: It is given that Value x = 6 Z-score = 1.25

Q: A given distribution has a population mean, μ, of 139 and a population standard deviation, σ, of 15.…

A: Given data, Mean( μ)=139 sd( σ)=15 If x=81 z=?

Q: A given distribution has a population mean, μ, of 140 and a population standard deviation, σ, of 7.…

A: From the given information,   Mean = 140 Standard deviation = 7   The objective is to find the…

Q: A given distribution has a population mean, μ, of 108 and a population standard deviation, σ, of 12.…

A:

Q: 2. A normally distributed variable has a mean of 75 and a standard deviation of 2. What is the…

A:

Q: What z-score would be associated with the value x = 172?

A: Given that Mean = 112 SD = 10 And value X = 172

Q: distribution has a population

A: z= (x-μ)/σ   Here, x = 124          μ=140         σ=11

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 9.…

A: Solution: Let X be the random variable. From the given information, X has a population mean µ=144…

Q: Find the mean, variance, and standard deviation of the binomial distribution with the giver values…

A: binomial distributionn = 121p = 0.44μ,σ2,σ = ?