(1 point) You have information to suggest that a certain continuous variable of a population has a mean of ?=10.33 μ = 10.33 and a standard deviation of ?=6.63 σ = 6.63 . You are to randomly pick ?=73 n = 73 individuals from this population and observe the value of the population variable on each . This value is to measured as ?? X i . After the random sample of ?=73 n = 73 has been taken, you are asked to consider the behavior of the statistic ?⎯⎯⎯⎯⎯ X ¯ . (a) Complete the statement below. Use at least two decimals in each numeric answer. The distribution of ?⎯⎯⎯⎯⎯ X ¯ with a mean ??⎯⎯⎯⎯⎯= μ X ¯ = equation editorEquation Editor and a standard deviation ??⎯⎯⎯⎯⎯= σ X ¯ = equation editorEquation Editor (b) Find the probability that mean of the sample of ?=73 n = 73 is between 9.63 and 10.83.
(1 point) You have information to suggest that a certain continuous variable of a population has...
(1 point) You have information to suggest that a certain continuous variable of a population has a mean of 12.56 and a standard deviation of o= 6.15. You are to randomly pick n = 68 individuals from this population and observe the value of the population variable on each. This value is to measured as X. After the random sample of n 68 has been taken, you are asked to consider the behavior of the statistic X. (a) Complete the...
(1 point) The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean μ=556.3μ=556.3 and standard deviation σ=27.8σ=27.8. (a) What is the probability that a single student randomly chosen from all those taking the test scores 561 or higher? ANSWER: equation editor Equation Editor For parts (b) through (d), consider a simple random sample (SRS) of 30 students who took the test. (b) What are the mean and standard deviation...
A population has a mean μ=73 and a standard deviation σ=24. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=64.
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=
A population of values has a normal distribution with μ=39.5 and σ=37.4. You intend to draw a random sample of size n=146. What is the mean of the distribution of sample means? μ¯x= What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) σ¯x=
A population has parameters μ=121.3μ=121.3 and σ=57.7σ=57.7. You intend to draw a random sample of size n=160n=160. What is the mean of the distribution of sample means? μ¯x=μx¯= What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) σ¯x=σx¯= You intend to draw a random sample of size n=636n=636 from a population whose parameter is p = 0.40133333333333 What is the mean of the distribution of sample means? μˆp=μp^= What is the...
Use the given data to find the 95% confidence interval estimate of the population mean μμ. Assume that the population has a normal distribution. Give your answers to 2 decimal places. IQ scores of professional athletes: Sample size n=25n=25 Mean x¯¯¯=105x¯=105 Standard deviation s=15s=15 equation editor <μ<<μ< equation editor
99 and standard deviation σ A population whose distribution is unknown has mean μ and a sample of size 26 is drawn from this population, then 1, a. The mean oJ a b. The standard error ot c. The distribution of A population whose distribution is unknown has mean μ = 99 and standard deviation σ = 7 and a sample of size 26 is drawn from this population, then 1, a. b. c. The mean of X= The standard...
A variable of a population has a mean of μ=100 and a standard deviation of σ=35. a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean________ and standard deviation_______?
A population of values has a normal distribution with μ=151μ=151 and σ=48.2σ=48.2. You intend to draw a random sample of size n=43n=43. What is the mean of the distribution of sample means? μ¯x=μx¯= What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) σ¯x=σx¯=