Questions 23-30: A normal population has a mean μ = 50 and a standard deviation σ...
Questions 23-30: A normal population has a mean μ = 50 and a
standard deviation σ = 8. That is, ?~?(50,8). Circle your final
answer for each question below.
23. What is the z-score for an individual with a value of 38?
24. What is the probability that a randomly chosen individual from
this population will be greater than 40?
25. What is the probability that a randomly chosen individual from
this population will be between 44 and 60?
26. If samples of size 25 are drawn from the population, what is
the mean of the sampling distribution of ? ̅?
27. If samples of size 25 are drawn from the population, what is
the standard deviation of the sampling distribution of ? ̅?
28. What is the probability that the sample mean from a sample of
size 25 will be less than 48?
29. What value of ? ̅ will produce the top 30% of the sampling
distribution?
Homework Answers
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Questions 23-30: A normal population has a mean μ = 50 and a
standard deviation σ...
Questions 23-30: A normal population has a mean μ = 50 and a standard deviation σ...
Questions 23-30: A normal population has a mean μ = 50 and a standard deviation σ = 8. That is, ?~?(50,8). Circle your final answer for each question below. 26. If samples of size 25 are drawn from the population, what is the mean of the sampling distribution of ?̅? 27. If samples of size 25 are drawn from the population, what is the standard deviation of the sampling distribution of ?̅?
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. * b. Find the mean of this sampling distribution. * c. Find the standard error of this sampling distribution. * d. What is the...
1. A population has a mean of 60 and a standard deviation of 30. Samples of...
1. A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution X. 2. Samples of size 16 are drawn from a population. the sampling distribution for X has a standard deviation of 0.25. Find the standard deviation of the population. 4. Tires are found to have a mean life of 40,000 miles. The standard deviation is 8000. A sample of 400 is...
99 and standard deviation σ A population whose distribution is unknown has mean μ and a sample of...
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 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 has a mean μ=73 and a standard deviation σ=24. Find the mean and standard...
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 has a mean μ=0.1 and a standard deviation σ=0.2. What is the standard deviation...
A population has a mean μ=0.1 and a standard deviation σ=0.2. What is the standard deviation of the sampling distribution of the sample means if the sample size is n=112? Round your answer to the nearest hundredth.
A population has a mean μ=71 and a standard deviation σ=27. Find the mean and standard...
A population has a mean μ=71 and a standard deviation σ=27. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=81. μx=_____ (Simplify your answer.)
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the...
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 81. μί-d (simplify your answer.) 5.4.18-T Question Help I * The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample...
A population of values has a normal distribution with μ=72μ=72 and σ=30σ=30 . You intend to...
A population of values has a normal distribution with μ=72μ=72 and σ=30σ=30 . You intend to draw a random sample of size n=25n=25 . Find the probability that a single randomly selected value from the population is less than 58.2. P(X < 58.2) = Find the probability that a sample of size n=25n=25 is randomly selected with a mean less than 58.2. P(M < 58.2) =
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...
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 81. μί-d (simplify your answer.) 5.4.18-T Question Help I * The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample...
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