Find the probability that the mean of a random sample of 25 elements from a normally...
Find the probability that the mean of a random sample of 25 elements from a normally distributed population with a mean of 90 and a standard deviation of 60 is larger than 100.
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Find the probability that the mean of a random sample of 25
elements from a normally...
A random sample of size n = 25 is obtained from a normally distributed population with...
A random sample of size n = 25 is obtained from a normally distributed population with population mean μ =200 and variance σ^2 = 100. a) What are the mean and standard deviation of the sampling distribution for the sample means? b) What is the probability that the sample mean is greater than 203? c) What is the value of the sample variance such that 5% of the sample variances would be less than this value? d) What is the...
Suppose a random sample of n = 25 observations is selected from a population that is...
Suppose a random sample of n = 25 observations is selected from a population that is normally distributed with mean equal to 109 and standard deviation equal to 15. (a) Find the probability that x exceeds 113. (b) Find the probability that the sample mean deviates from the population mean μ = 109 by no more than 5.
Suppose a random sample of n = 25 observations is selected from a population that is...
Suppose a random sample of n = 25 observations is selected from a population that is normally distributed with mean equal to 106 and standard deviation equal to 15. (a) Give the mean and the standard deviation of the sampling distribution of the sample mean x̄. mean= standard deviation= (b) Find the probability that x̄ exceeds 115. (Round your answer to four decimal places.) (c) Find the probability that the sample mean deviates from the population mean μ...
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation o...
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 28 and 34 b. between 20 and 35 6.34 Let x be a continuous random variable that has a normal distribution with a mean of 30 and a stan- dard deviation of 2. Find the probability that x assumes a value a. between 29 and 35 b....
A simple random sample of size nequals=25 is drawn from a population that is normally distributed....
A simple random sample of size nequals=25 is drawn from a population that is normally distributed. The sample mean is found to be x overbar equals 65 and the sample standard deviation is found to be s equals=20. Construct a 90% confidence interval about the population mean.
Suppose X is normally distributed with mean 4 and standard deviation 4. Find the probability that...
Suppose X is normally distributed with mean 4 and standard deviation 4. Find the probability that 2X exceeds 7. Group of answer choices .5497 Suppose a random sample of 25 measurements is taken from a population with mean 17 and variance 100. The variance of the sample mean is Group of answer choices 2 0.68 4 17 100 .301 .4012 .4555 .5988
A normally distributed population has a mean of 600 and a standard deviation of 60. a....
A normally distributed population has a mean of 600 and a standard deviation of 60. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 579. b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 636.
The population s1700. A random sample of 25 managers is selected from this population. Find the...
The population s1700. A random sample of 25 managers is selected from this population. Find the probability that the mean annual salary of the sample is less than $55,000 mean annual salary for managers is $59,100, with a standard deviation of
The population s1700. A random sample of 25 managers is selected from this population. Find the probability that the mean annual salary of the sample is less than $55,000 mean annual salary for managers is $59,100, with a standard...
How do I get this answer in excel? 2. A normally distributed population with 200 elements...
How do I get this answer in excel?
2. A normally distributed population with 200 elements has a mean of 60 and a standard deviation of 10. The probability that the mean of a sample of 25 elements taken from this population would be smaller than 56 is a. 0.0166 5 0.0228 c. 0.3708 d. 0.0394
Random samples of size 55 are taken from a normally distributed population that has 425 elements,...
Random samples of size 55 are taken from a normally distributed population that has 425 elements, a population mean of 20, and a population standard deviation of 7. What is the standard deviation of the sampling distribution of the sample means?
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 28 and 34 b. between 20 and 35 6.34 Let x be a continuous random variable that has a normal distribution with a mean of 30 and a stan- dard deviation of 2. Find the probability that x assumes a value a. between 29 and 35 b....
A normally distributed population has a mean of 600 and a standard deviation of 60. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 579. b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 636.
The population s1700. A random sample of 25 managers is selected from this population. Find the probability that the mean annual salary of the sample is less than $55,000 mean annual salary for managers is $59,100, with a standard deviation of
The population s1700. A random sample of 25 managers is selected from this population. Find the probability that the mean annual salary of the sample is less than $55,000 mean annual salary for managers is $59,100, with a standard...
How do I get this answer in excel?
2. A normally distributed population with 200 elements has a mean of 60 and a standard deviation of 10. The probability that the mean of a sample of 25 elements taken from this population would be smaller than 56 is a. 0.0166 5 0.0228 c. 0.3708 d. 0.0394
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