A normally distributed population with unknown variance has a mean of 20. If you took a random sample of size n = 9 from this population and computed a sample standard deviation of 4.1, how likely is it that the sample mean is greater than 24?

Q: what is the sample standard deviation?

A:

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A: It is given that the mean and standard deviation are 4.4 and 8.24.

Q: A simple random sample of 100 observations was taken from a large population. The population mean…

A: Solution: Given information: n= 100 Sample size  μ=50  Population mean σ= 5 Population standard…

Q: A population has mean µ = 40 and %3D standard deviation o = 20. What should %3D the sample sizen be…

A:

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A: The sample mean and the standard deviation are μ = 80 and σ = 12 respectively.Let X denotes the…

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: Please help him by finding the standard error of the mean for these data.

A: To find the standard error of the mean.Given that,

Q: The mean and standard deviation of a set of 100 observations were Worked out as 40 and 5…

A: We have given that Number of observations(n)=100  Corrected mean=40 Standard deviation=5  Mistaken…

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 14, 16, 18,…

A: Given observation SAMPLE of scores is: 14, 16, 18, 13, 13, 19, 21, 11 n = 8

Q: A sample of 169 is drawn from a certain population. This sample has a mean of 80 and a standard…

A:

Q: A random sample of 18 light bulbs is drawn from a normally distributed population. The population…

A:

Q: In a population, the mean is known to be 1.27 and the standard deviation is known to be 0.351.…

A: The population mean is 1.27; μ=1.27 The population standard deviation is 0.351;σ=0.351 The sample…

Q: The sum of the squared deviation scores is SS = 20 for a sample of n = 6 scores. What is the…

A: The variance of the sample can be calculated as:

Q: ize 400 is taken from a population with a mean of 610 and a standard deviation of 15. Find the…

A: Given, n=400 Mean (μ) = 610 Standard deviation (σ) = 15

Q: For a standardized exam at your school, the mean score is 106.0 with a variance of 401.3. The school…

A: It is given that Sample size n = 10 Sample variance s2 = 178.7 Population variance = 401.3

Q: A simple random sample of 64 observations was taken from a large population. The sample mean and the…

A:

Q: if the standard deviation of a sample is 0.5 find the variance

A:

Q: The sum of the squared deviation scores, aka the sum of the squares, is SS=60 for a sample of n=5…

A:

Q: In a random sample taken from 3 high schools in Albany area the mean GPA of female seniors (N = 526)…

A: Solution: Given information: n1=526 Sample size of sample 1n2= 477  Sample size of sample 2 x1= 2.92…

Q: Suppose you were to take samples of size 100 from a population with a mean of 12 and a standard…

A: The formula of the standard error of the mean is,

Q: Assume you have taken 125 samples of size 81 each from a population. The population variance is 64.…

A:

Q: A population has a mean of 75 and a standard deviation of 15 you randomly sample nine people from…

A: Given population have mean 75 and standard deviation 15. A sample of 9 people from the population is…

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 15, 17, 19,…

A: Given data is 15, 17, 19, 22, 10, 23, 16, 15S.S=122.88

Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: According to the given information in this question We need to find standard error

Q: If I have the variance of 36 and the standard deviation of 6, how do I calculate the range?

A: From the provided information, Variance (σ2) = 36 Standard deviation (σ) = 6

Q: A simple random sample of 64 observations was taken from a large population.  The sample mean and…

A: Solution-: Given: n=64,x¯=320,s=120 We want to find the standard error of the sample mean=?

Q: A sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard…

A: Given statistics:Consider the variable x represents the distance scores in yards.The given…

Q: When sampling from a population with mean μ and standard deviation σ, the sampling distribution of…

A: Given that  Population with mean μ and standard deviation σ

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A:

Q: Suppose you could take all samples of size 77 from a population with a mean of 12 and a standard…

A: Given data, Mean μ=12 sd      σ=3.2 n=77 standard deviation of the sample means σx=?

Q: Assume the scores on a standardized test are known to follow a bell-shaped distribution with a mean…

A: Here,  Sample size =1250 Mean=90 Variance =9 Standard deviation =3 Empirical rule: 68% of the data…

Q: IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

A: It is an important part of statistics . It is widely used .

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.