The population has a mean of 30 and a standard deviation of 6. The sample size of your sampling distribution is N=9. What is the variance of the sampling distribution of the mean?

Q: Find the sample variance and sample standard deviation of a population. Given that population…

A: We have given that,  Population standard deviation (σ) = 15 and sample size (n) = 25

Q: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50.…

A: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50.

Q: Find the range, the standard deviation, and the variance for the given samples. Round non-integer…

A: The range is calculated below. The range of the sample data is 2.0.

Q: If you know that the variance of a normal distribution is 50, then to the nearest whole number, what…

A:

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

A:

Q: The proportion of a population with a characteristic is p= 0.35. Calculate the standard deviation of…

A: From the provided information, Population proportion (p) = 0.35 Sample size (n) = 900

Q: In a sample distribution, X=56 corresponds to z=1.00, and X=47 corresponds to z=-0.50. Find the mean…

A: Given,  X=56 corresponds to z=1.00 X=47 corresponds to z=-0.50 wktz=x-μσX=zσ +μ

Q: The standard deviation of a sample is directly proportional to the square root of its sample size.…

A: We have given the following statement about the standard deviation.

Q: Suppose a normal distribution has a mean of 98 and a standard deviation of 6. What is P(x2 104)? A.…

A: We have given that.   X~N( μ , ?^2 )   μ=98   , ?=6   Z-score =( x - μ )/?

Q: For a population with a mean of 35 and standard deviation of 7, find the sample mean of size n = 20…

A: The formula to find the sample mean is, x¯=μ+zσn From the Standard Normal Table, the value of z for…

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: The population has a mean of 14 and a standard deviation of 3. The sample size of your sampling…

A:

Q: Past experience indicates that the variance in the time it takes for a "fast lube" operation to…

A:

Q: Find the mean and standard deviation of the sampling distribution of x

A: Given that sample size is n = 36 Mean = 71 And SD = 24

Q: The population variance is the square of the sample standard deviation  True  False

A: From the provided information, The statement is that the population variance is the square of the…

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: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size is…

A:

Q: The relative standard deviation for an .8 unknown sample that gave a S/N ratio of 6 * is 1.0 0.2 0.4…

A: Given : Relative standard deviation = 0.8 Sn = 6

Q: The standard deviation of a sampling distribution is smaller than the standard deviation of the…

A: The comparison of sd of sample to the sd of the population is as follows:

Q: Two samples, each with n = 5 scores, have a pooled variance of 40. What is the estimated standard…

A:

Q: For a normal distribution with a mean of μ = 10 and a standard deviation of σ = 2, what is p(5<X<15)

A: It is given that X follows N(mean = 10, SD = 2), then Z = (X - mean)/SD follows N(0,1)

Q: For a t distribution with 15 degrees of freedom, 90% of the distribution is within how many standard…

A:

Q: A random sample of 100 students is taken from the population of all part-time students in the U.S.,…

A: Given,   n = 100 p = 0.6   The objective is to find the mean and standard deviation of the sampling…

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: which value of л would it be safe to assume the sampling distribution of Y is approximately normal?

A: here given ,  n=100

Q: Consider a test of coordination that has a normal distribution, a mean of 60 and a standard…

A:

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 standard deviation equal 4 so the variance equal 6. 16 8 10 O O O O O 00

A:

Q: The average age of a car registered in the Land Transportation Office is 10 years or 120 months.…

A: Sampling Distribution of a Normal Variable :  Given a random variable X. Suppose that the population…

Q: Find the sample variance and sample standard deviation of a population. Given that population…

A: Here Given  σ=6 Sample size=n=21

Q: Q3 :- :- if you know the standard deviation = 3 for measured data, what is the variance ?

A: Given in question  Standard deviation = 3

Q: Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(x≤ 47)? OA.…

A:

Q: For a normal distribution with a mean of µ = 100 and a standard deviation of σ = 10, what is…

A:

Q: If a sample of size 16 is selected from a population that follows a normal distribution with a…

A:

Q: If a normal distribution has a mean of 35 and a standard deviation of 5, then The median is 35 and…

A: We know that normal distribution is symmetricaldistribution .i.e mean=median=mode

Q: For a sample from a normal distribution with standard deviation σσ, the standard deviation of the…

A:

Q: Find the range, the standard deviation, and the variance for the given samples. round non-integer…

A: According to question given2.4, 4.1, 4.4, 3.4,2.8, 3.1

Q: Given a non-normal population with a variance of 25 and mean of 13. If the size of a sample is n =…

A: Assume the variable of interest is X.

Q: Find the range, the standard deviation, and the variance for the given samples. Round non-integer…

A:

Q: The population has a mean of 120 and a standard deviation of 12. The sample size of your sampling…

A: The provided information are: Population mean (µ) = 120 Population standard deviation (σ) = 12…

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

A:

Q: A factory produces sacks of flour, a sample of 14 pieces with the following weights are taken: Find…

A:

Q: Find the range, the standard deviation, and the variance for the givien samples. Round non integer…

A: Solution: x x^2 2 4 6 36 8 64 10 100 12 144 15 225 17 289 --- --- ∑x=70…

Q: Find the range, the standard deviation, and the variance for a given samples.(Round non- interger…

A: Solution: The given data is 3, 5, 7, 8, 12, 20, and 25 The maximum value is 25 and the minimum value…

Q: As the sample size n increases, the standard deviation of the sampling distribution decreases.

A: The standard error (SE) of a statistic is approximately the standard deviation of a statistical…

Q: Suppose a random sample of size is selected from a population that is normally distributed with a…

A: Solution-: Given: μ=7.3,σ=0.82,n=1 Give the mean and the standard deviation of the sampling…

Q: A certain data set has a variance of 9.  Find the standard deviation of the data set.

A: Given :-   Variance (S2) =9   we have to find standard devistion.

Q: The mean, µ, is (Round to the nearest tenth as needed.) The variance, o², is| (Round to the nearest…

A: Given : The distribution is binomial distribution  and  n = 50 , p = 0.2

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately…

A: Mean(µ) = 858 Standard deviations (σ) = 54 Sample size (n) = 50 X ~ N (µ, σ )= N ( 858, 54) x̅~ N…

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.