A random sample of size 23 is selected from Normal distribution with mean 16 and unknown variance. If the sample standard deviation S is 10, then the (95.)th percentile of the sample mean is closest to: O a. 17.40 O b. 16.80 О с. 13.20 O d. 12.40 Ое. 19.60

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A random sample of 10 subjects have weights with a standard deviation of 12.0718 kg. What is the…

A: Given: Standard deviation = SD = 12.0718

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A:

Q: If x represents a random variable with mean 118 and standard deviation 35, then the standard…

A: According to the given information, we have Mean = 118 Standard deviation = 35 Sample size = 49

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A: Denote μ1, μ2 as the true population mean incomes of police officers for Place B and G,…

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A: Given,   Mean = 0.25 Standard deviation = 0.02

Q: A random sample of n = 4 scores is obtained from a population with a mean of µ = 80 and a standard…

A: Solution: From the given information, n=4, µ=80, σ=10 and M=90.

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A: Given, The population standard deviation is σ = 11.4 Level of significance is α = 0.05 The…

Q: If x represents a random variable with mean 124 and standard deviation 30, then the standard…

A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first…

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.5…

A: We know that if; Y~Binomial(n,p)Then the expected value of Y is;E(Y)=npand the standard deviation of…

Q: The lifespans of the light bulbs produced by a Filip Company are normally distributed with a mean of…

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: ounts of time per workout an athlete uses a stairclimber are normally​ distributed, with a mean of…

A: (a) Given: μ=25, σ=7 The corresponding z-value needed to be computed:  The probability that a…

Q: If a student computes the standard deviation that was due to the analysis error from a homogenous…

A: Given SD from homogenous sample = 0.04 SD from heterogeneous sample = 0.05

Q: For a sample of 40 items from a population for which the standard deviation is σ = 7.4, the sample…

A:

Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

A: Given information: X is a random variable follows normal distribution. That means,

Q: A random sample of size 12 is selected from Normal distribution with mean 18 and unknown variance.…

A:

Q: In order to meet the standard of a hall fellow, a neophyte must garner a grade of 74 or above on an…

A: X~N( μ =82 , ? = 5 )     μ = 82 , ? = 5     Z-score =( x - μ )/?

Q: A random sample of n = 16 scores is obtained from a normal population with a mean of µ = 100 and a…

A:

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Q: If x represents a random variable with mean 137 and standard deviation 35, then the standard…

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Q: The mean tar content of a simple random sample of 25 unfiltered​ king-size cigarettes is 20.8 ​mg,…

A: Given: n1=25x¯1=20.8s1=3n2=25x¯2=13.0s2=3.9

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A: Given that, Mean = 64 Standard deviation = 12 Sample size = 20

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A:

Q: Random samples of size 64 are taken from an infinite population whose mean is 50 and standard…

A: Givensample size(n)=64mean(μ)=50standard deviation(σ)=16

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Q: A fast food chain advertises that their large bag of French fries has a weight of 150 grams.  Some…

A: State the hypotheses.

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A: Given Information : The mean tar content of a simple random sample of 25 unfiltered king size…

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A:

Q: Suppose  that  the  current measurements  in  a  strip  of  wire  are  assumed  to follow  a  normal…

A: Solution

Q: The population of Senior High School learners in XYZ Integrated School has a mean of 54.5 and a…

A: HERE AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION KINDLY REPOST FOR REMAINING HERE mean…

Q: For random samples of size n = 16 selected from a normal distribution with a mean of µ = 75 and a…

A: sample size: n = 16mean: µ = 75 standard deviation: σ = 20   To find c such that, P( x¯ <c )…

Q: BIG Corporation produces just about everything but is currently interested in the lifetimes of its…

A: Given: Sample Size n=1000Mean x¯=889Standard Deviation s=97

Q: a) The weights of kindergarten students are known to be normally distributed with a mean of 19.5 kg…

A:

Q: An electrical appliance made by company A has an average life of 2500 hours, with a standard…

A: Given that For Company A  Population mean=2500 hours Standard deviation =500 hours  Sample size=300…

Q: Suppose that chemistry exam scores are normally distributed with a mean of 24 and a standard…

A: Let X denote exam scores. Given that X follows N(mean = 24, SD = 4)

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A:

Q: Suppose a random sample of size 1000 is selected from a large population where the population mean…

A: Obtain the standard error of the mean of the sampling distribution. The standard error of the mean…

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A: Given Information: Unfiltered king size cigarettes: Sample size n1=25 Sample mean x¯1=21.1 Sample…

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Q: suppose the random variable X has a normal distribution with a mean of 10 and a variance of 16…

A: Given: The random variable X is normally distributed. The population mean is given as:…

Q: The lifespans of the light bulbs produced by a Filip Company are normally distributed with a mean of…

A: Given,mean(μ)=1150standard deviation(σ)=175

Q: A. Birthweights are distributed Normally, with a mean of 3.39kg and a standard deviation of 0.55kg…

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Q: A math teacher claims that the mean scores on a math assessment test for fourth grade boys and girls…

A: The provided information is  x¯2=151x¯2=149s1=36s2=34n1=13n2=15α=0.01 a.The null and alternative…

Q: (a) On a farm, at 20 weeks, the weights of roosters follow an approximately normal distribution with…

A: Given data: mean =  2.16 kg variance = 0.09 kg2

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Q: Suppose that a simple random sample is taken from a normal population having a standard deviation of…

A: Given, n=64 σ=5.5α=0.05MOE=Zα/2*σn

Q: The mean tar content of a simple random sample of 25 unfiltered​ king-size cigarettes is 21.4 ​mg,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…