15. The standard deviation of all possible sample means equals

Q: 4. Consider that in a population of Filipino adults ages 18 to 65, Body Mass Index (BMI) is normally…

A: Given: X~N(μ,σ)μ=28σ=6

Q: 3. It was observed that the standard deviation of the number of hours people are glued to their…

A: 3. The provided information is  σ=13.43

Q: 5. Thirty-two percent of adult Internet users have purchased products or services online. For a…

A:

Q: 3. Calculate SS, variance, and the standard deviation for the following population of N=7 scores: 8,…

A: As per our guidelines we are supposed to answer only one question per post so i am solving only your…

Q: If the mean and standard deviation of a population are 40 and 2, respectively and the sample size is…

A: Dear student, If you find this solution helpful please upvote ? it.

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

A:

Q: calculate ss, variance, and standard deviation for the population of N=7  scores are: 8,1,4,3,5,3

A:

Q: Suppose the country club bills based on a sample of 4 members are: 410, 1,089, 637, 961. What is the…

A: Given information- We have given the country club bills based on a sample of 4 members. 410, 1,089,…

Q: 4.) Determine the range and Standard Deviation of the set of data 4, 8, 9, 11, 13, 15

A:

Q: 11. What is the relationship between the standard deviation of the sample mean se( X), for samples…

A: Standard deviation of sample mean is also know as Standard error

Q: a. How many 18 to 29 year olds must be sampled to find at least 50 who invest in the stock market?…

A: Part a: For 18-29 years old the percent of individuals involved in stock market is 31%. Thus, X…

Q: calculate the mean and standard deviation of the two samples: sample 1: 10, 11, 11, 9, 8 sample 2:…

A: Given : sample 1: 10, 11, 11, 9, 8 sample 2: 17, 12, 14, 18, 14

Q: (a) How many reams should the manager expect to use each day? (b) What is the standard deviation of…

A: here given Discrete probability Distribution of X  X=  no of reams of paper Used

Q: A Data has a mean of 50 and a standard deviation of 6. (a) What are the mean and standard deviation…

A: Central Limit Theorem for mean: If a random sample of size N is taken from a population having mean…

Q: Q1, Compute variance, the standard deviation, and SS for the sample below, 7, 5, 8, 5, 7, 6, 8, 5

A: Q1. The sample mean is, x¯=∑ixin=7+5+8+5+7+6+8+58=518=6.375 The sample mean is 6.375. The value of…

Q: the mean and standard deviation of a population are 200 and 20 respectively. suppose the sample size…

A: Given data,μ=200σ=20If n=36the mean of the sampling distribution=?

Q: 5. If you want to be 85% confident of estimating the population mean sampling error of +5 and the…

A: At 85% confidence level, the z value is 1.44 which can be obtained by using the standard normal…

Q: b) Suppose that in a random sample of 600 customers, 270 express satisfaction with the dealership.…

A: sample of 600 customer

Q: 9. Under what circumstances will the distribution of sample means be normal?

A:

Q: Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite…

A:

Q: what is the mean and standard deviation of the following sample:  8, 1, 5, 1, 5

A: From the given information, X= {8, 1, 5, 1, 5}Mean and standard deviation of the sample can be…

Q: 1. Suppose that we want to estimate to within $1000 the mean salary of all graduates who were…

A: Given,margin of error(E)=1000standard deviation(σ)=5000α=1-0.95=0.05α2=0.025z0.025=1.96

Q: 7. What type of statistical test should be used when the population is approximately normally…

A: When Population is normally distributed and population standard deviation is known we use the Z…

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n= 64,then the population…

A:

Q: If the population standard deviation is σ=10, how large a sample is necessary to have a standard…

A: σ=10   The standard error is given by SE = σn n = (σSE)2

Q: How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters?…

A:

Q: if the sample mean is 10, the population standard deviation is 20, and the sample size is 25, then…

A:

Q: 4) Find the population standard deviation for the following scores: x = 2,45,2,6,3,2,9,10,11,34,64…

A:

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n = 64, then the population…

A:

Q: pose a population has three values (13, 17, 24)

A: Given, Let X  =13, 17, 24

Q: 4. Find the mean absolute deviation for: Cost of books in dollars: 4, 15, 8, 4, 6, 11, 1, 7, 3, 1

A:

Q: Given that the population standard deviation equals 273 and the sample size consists of 741…

A: Given information- Population standard deviation, σ = 273 Sample size, n = 741 We have to find the…

Q: What is the standard deviation of the following sample data:  24, 37, 31, 48, 19, 31.

A: Solution: x x^2 24 576 37 1369 31 961 48 2304 19 361 31 961 --- --- ∑x=190…

Q: 2. Suppose the following are the number of empty seats on 9 different flights from Lansing to…

A: From the empirical rule, 68% of the data values falls within one standard deviation from the mean.…

Q: For a population with a mean of 45 and a standard deviation of 10, what is the standard error of the…

A: Obtain the value of standard error for the sample of size n=4 scores.   The value of standard…

Q: If the Standard Error SE( y ) is 1.299 and if the sample standard deviation is 4.87, what is the…

A: It is given that S.E(mean) = 1.299 Sample SD s = 4.87

Q: 1. True or False The sampling distribution of the mean will have the same mean as the original…

A: We have to find out given probabiity..

Q: 10. If you have a sample of n=25, what is the standard error if the population standard deviation is…

A: The standard error of a statistics is shows the standard deviation of a estimate of a parameter and…

Q: A. Consider all samples of size 5 from this population:2, 5, 6, 8, 10, 12, 13 1. Compute the mean…

A: NOTE: As per the guidelines, we are supposed to do the first question only.   The data set is :…

Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

A:

Q: 12.What is the sample size needed if the margin of error is 30 and the standard deviation of 45 with…

A: (12)  We have given that,  Confidence level (C.I) = 98% , standard deviation (σ) = 45 and margin of…

Q: The standard deviation of the sample 10, 10, 10, 10, 10  is

A:

Q: If the sample size is 100 and the population standard deviation is 20, then the standard deviation…

A: Given  True or false question Sample size=100  Population standard deviation=20  We need to…

Q: Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.

A: Given,n=50p=0.8

Q: 1. When conducting a hypothesis test for the population mean, you will not know the population…

A: The process will remain unchanged but the distribution. As,  you know the sample standard deviation.…

Q: Which of the statements below is true about the standard error of the sampling distribution of the…

A:

Q: Suppose that, on average, electricians earn approximately µ = $54,000 per year in the United States.…

A: Given information- Population mean, µ = $54,000 Population standard deviation, σ = $12,000 Sample…

Q: 12. What is the standard deviation of the data {7, 1, 7, 10, 5, 3, 2}?

A:

Q: 4. A normally distributed set of 1,010 values has a mean of 103 and a standard deviation of 12.…

A:

Q: 11- Assuming that IQ is normally distributed with a mean of 100 and a standard deviation of 15,…

A: NOTE: According to the guidelines, we are supposed to solve first question only. Please repost other…