An SDoM has a mean of 58. What is the standard error if 26.11% of sample means are below a mean of 50.32?
Solution:
Given: An SDoM has a mean of 58,that is:
We are given:
We have to find value of Standard Error :
Thus find z value such that:
P( Z< z) =0.2611
Look in z table for Area = 0.2611 or its closest area and find corresponding z value.
Area 0.2611 corresponds to -0.6 and 0.04
thus z = -0.64
Now use following formula to find Standard Error : value:
An SDoM has a mean of 58. What is the standard error if 26.11% of sample...
2. In words, what is the standard error of the mean? Select all that apply. 1. The standard deviation of the scores in a population 2. The typical distance between scores and a population mean 3. The standard deviation of the distribution of sample means 4. The typical distance between sample means of a given size from a population mean 3. What is the relationship between sampling error and the standard error of the mean? 1. You compute the standard...
47. What happens to the mean and standard deviation of the distribution of sample means as the size of the sample decreases? A) The mean of the sample means stays constant and the standard error decreases. B) The mean of the sample means increases and the standard error stays. C) The mean of the sample means decreases and the standard error increases. D) The mean of the sample means stays constant and the standard error increases. 48. Find the critical value ze that corresponds to...
Sample A has a larger standard error of the mean than Sample B. Which sample mean would you trust to be a better estimate of the population mean? a. both samples would provide equally good estimates of the population mean b. unable to determine with the provided information c. Sample A d. Sample B
Given a sample mean=13.24; sample standard deviation=3.40; estimated standard error of the mean=0.567; margin of error for 95% confidence interval for estimating the population mean=1.151. What is the upper bound of the 95% confidence interval? (Enter the value with 3 decimal places in the form ##.###)
To develop a confidence interval for the population mean difference, you need to calculate the estimated standard error of the difference of sample means. The estimated standard error is?
Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution The mean price of photo printers on a website is $250 with a standard deviation of $63. Random samples of size 20 are drawn from this population and the mean of each sample is determined. The mean of the distribution of sample means is The standard deviation of the distribution of sample means...
Question 183 pts In a normal distribution, what percentage of sample observations fall between the mean and .71 standard deviations above or below the mean? 1.96% 76.11% 26.11% 13.6%
A population of values has a mean of 184.8 and standard deviation of 68.7 and. You intend to draw a random sample of size n=209n=209. What is the mean of the distribution of sample means? μ¯x= What is the standard deviation of the distribution of sample means (Standard error)? σ¯x=
Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The mean price of photo printers on a website is $243 with a standard deviation of $59. Random samples of size 26 are drawn from this population and the mean of each sample is determined. The mean of the distribution of sample means is _______.
A population has a mean μ 84 and a standard deviation -27 Find the mean and standard deviation of a sampling dstribution of sample means with sample sze n-81 (Simplity your answer) %" [] (Simplify your answer ) Use the given confidence interval to find the margin of error and the sample mean. (13.3,23.1) The sample mean is(Type an integer or a decimal.) in of error is . (Type an integer or a decimal.)