The variance of a sample of 169 observations equals 576. The standard deviation of the sample equals O 13 O 24 O 576 O 28,461

Q: If the Stanford-Binet IQ test is a normal curve with mean of 100 and standard deviation of 20, what…

A: The population mean is 100. The population standard deviation is 20. We have to find the percent of…

Q: If a population has a standard deviation of 16, what is the minimum number of samples that need to…

A: Given,standard deviation (σ)=16margin of error (E)=2α=1-0.88=0.12α2=0.06Z0.06 =1.5548

Q: The population standard deviation and sample standard deviation are of the same value if the…

A: Solution A population and sample standard deviation both have same unit as Population unit.

Q: for a population with a mean of u=72 and a standard deviation of σ=10, what is the standard error of…

A: Given,mean(μ)=72standard deviation(σ)=10

Q: How many standard deviations to either side of the mean must we go to ensure that, for any data set,…

A:

Q: If the sample size is 36 and the population standard deviation is 24, then the standard deviation of…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5 find P(X…

A: Solution:From the given information, normal distribution with population mean as 35 and standard…

Q: a) In the analysis of a barrel of powder, the standard deviation of the sampling operation is ±4%…

A: a) The standard deviation of the sampling operation is ± 4% or ± 0.04 and the standard deviation of…

Q: When the coefficient of variation is equal to 20% and the standard deviation is equal to 5, then the…

A:

Q: SEM for a sample of size 100 and standard deviation of 5.6 is equal to? O-14/25 O 23/100 O 67/100…

A: Thank you for posting the question. As your question has more than two questions, as per the policy,…

Q: Find the standard deviation for the following data set. 2, 2, 2, 5, 5, 6, 6, 8, 8, 9 O A. 5 О В.…

A:

Q: Calculate the standard deviation of the data shown, to two decimal places 16.1 18.5 19.3 14.4 3.9…

A:

Q: Which of the following is the correct formula for the margin of error of a population mean where the…

A: Margin of error: A margin of error is a statistical measurement for the diff. between actual and…

Q: For the following sample of scores: 28 22 38 26 14 8 4 If the mean is 20, Then the standard…

A: Given x-bar=20 n=7

Q: If the standard deviation of a population is 20 and we take a sample of size 16 from which to…

A: Given information Standard deviation σ = 20 Sample size n = 16

Q: 9. A sample of 25 observations has a standard deviation of 5. The sum of the squared deviations for…

A: The sum of the deviations from the mean is always equal to zero because the sum of the deviations…

Q: Two samples of scores on a survey are as follows: Sample A: 10 7 6 Sample B: 183 10 112 7 28. What…

A:

Q: (d) If the sample size is n= 16, what is the standard deviation of the population from which the…

A: Using central limit theorem.

Q: Compute the standard deviation of the sampled proportions if p=.4 and n=500. Round to three places.

A: We want to find standard deviation  X~Binomial(n=500,p=0.4)

Q: If the variance of a national accounting examination is 900, how large a sample is needed to…

A:

Q: 9. A sample of 25 observations has a standard deviation of 5. The sum of the squared deviations for…

A: To find: The sum of the squared deviations for all observations from the sample mean.

Q: For the Reese's pieces scenario, compute the standard deviation of sample taking if the size of the…

A: Answer - For the Reese's pieces scenario, the size of the samples is n =  200 and the proportion of…

Q: For a given sample data set composed of 26 observations and E(x-x) 225, then the standard deviation…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5 find P(X…

A: Given dataMean = 35Standard deviation = 7.5

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5 find P(X <…

A:

Q: A normally distributed population has a mean of 88 and a standard deviation of 10. When a sample of…

A: Here the given population mean is 88 and population standard deviation is 10.

Q: Given a population of 5000 scores with a mean of 86 and a standard deviation of 10, how many scores…

A:

Q: Without the degrees of freedom, the standard deviation of population will be estimated:   Question…

A: We want to know Without degrees of freedom standard deviation of population is.

Q: A hypothetical distribution for a population of test scores has a mean of 60.4, a median of 62.8,…

A: According to the given information in this question We need to find standard deviation of sampling…

Q: A positively skewed population has a mean of ? = 100 and a standard deviation of ? = 15. a. What is…

A: Mean of , μ = 100 Standard deviation of , σ = 15   What is the mean of the distribution of sample…

Q: Compute for the sample mean, sample variance and sample standard deviation. The score of the 5…

A: Given: The scores are provided as:                                                    35, 15, 31,…

Q: In a small company of 10 people the salaries are as follows: 5 people earn $25,000, 3 earn $27,000,…

A: Questions   find mean (x→) and standard deviation (σ).   Data Given - 5 people earn $25,000   3…

Q: The symbol oz represents the standard deviation of a sample of size n. True O False

A: Answer : B. False

Q: If the variance is 140.2, what is the Standard deviation from the following? O a. 16.56 O b. 11.84 O…

A: Given data,Variance=140.2Standard deviation=?

Q: For data with a bell shaped about of the data lie within three standard deviation of the mean 68%…

A:

Q: 1. Find the variance and the standard deviation of the following admission test results of ten (10)…

A: Note: Please repost 2nd question as i can author only one question as per my policy. Given…

Q: What is the value of k?   What is the standard deviation?

A: Here use basic of discrete probability distribution

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: We have given that mean = μ = 50standard deviation = σ = 8 z = 0.25

Q: For a given sample data set composed of 26 observations and E(x-x)2 225, then the standard deviation…

A:

Q: Consider the normal distribution of IQs with a mean of 100 and a standard deviation of 16. What…

A:

Q: If a data value has a z-score of 3.00 and the mean of the distribution is 100 with a standard…

A: 1) Given data, z=3 μ=100 σ=15 X=?

Q: The standard deviation of the given data is A. 1.4495 B. 1.4597 C. 2.1011 D. 2.1307

A:

Q: In a sample of 38 observations, you calculate a sample standard deviation of 6. To test Ho : o = 20…

A: According to the given information, we have H0: σ2=20Ha: σ2≠20Sample standard deviation, s = 6Sample…

Q: Suppose that the score in Mathematics exam is normally distributed with a mean of 20 and a standard…

A:

Q: If the variance of a national accounting examination is 900, how large a sample is needed to…

A: Solution

Q: Calculate the standard deviation of the data shown, to two decimal places 14 10.2 15.8 20.6 6.9 5.9

A:

Q: the standard deviation of a sample of 50 observations equals 10. the variance of the sample equals?…

A:

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: GivenMean(μ)=50standard deviation(σ)=8z=2.50

Q: According to the Chebyshev Rule, at least 96% of all observations in any data set are contained…

A: Given Data: The percentage amount of data is: D%=96% From Chebyshev rule, The percentage amount of…