1. Suppose the variable x is represented by a standard normal distribution. What is the probability...
1. Suppose the variable x is represented by a standard normal distribution. What is the probability of x < -0.6? Please specify your answer in decimal terms and round your answer to the nearest hundredth (e.g., enter 12 percent as 0.12).
2. The mean is 55.3 and the standard deviation is 9.2 for a population.
Using the Central Limit Theorem, what is the standard deviation of the distribution of sample means for samples of size 65?
Homework Answers
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1. Suppose the variable x is represented by a standard normal
distribution. What is the probability...
The mean is 55.3 and the standard deviation is 9.2 for a population. Using the Central...
The mean is 55.3 and the standard deviation is 9.2 for a population. Using the Central Limit Theorem, what is the standard deviation of the distribution of sample means for samples of size 65? Please round your answer to the nearest tenth. Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.
Suppose the variable x is represented by a standard normal distribution. What value of x is...
Suppose the variable x is represented by a standard normal distribution. What value of x is at the 60th percentile of the distribution? Equivalently, what is the value for which there is a probability of 0.60 that x will be less than that value? Please round your answer to the nearest hundredth.
The mean is 47.1 and the standard deviation is 9.5 for a population. Using the Central...
The mean is 47.1 and the standard deviation is 9.5 for a population. Using the Central Limit Theorem, what is the standard deviation of the distribution of sample means for samples of size 60? Please round your answer to the nearest tenth. Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.
A population of values has a normal distribution with μ=121.3μ=121.3 and σ=57.2σ=57.2. You intend to draw...
A population of values has a normal distribution with
μ=121.3μ=121.3 and σ=57.2σ=57.2. You intend to draw a random sample
of size n=27n=27.
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¯=
ule 7 The Central Limit Theorem Due in 6 hours, 52 A population of values has a normal distribution with y = 121.3 ando = 57.2. You intend...
The mean is 44.8 and the standard deviation is 16.2 for a population. Using the Central...
The mean is 44.8 and the standard deviation is 16.2 for a population. Using the Central Limit Theorem, what is the variance of the distribution of sample means for samples of size 50? Please round your answer to the nearest tenth. Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.
31. According to the Central Limit Theorem, for random samples, what is the approximate shape of the sampling distr...
31. According to the Central Limit Theorem, for random samples, what is the approximate shape of the sampling distribution of x-bar when the population distribution is non-Normal? Always the same as the shape of the population O Always Normal, even if the sample size is small Approximately Normal if the sample size is large 32. Choose the probability that best matches the following statement: "This event is very unlikely, but it will occur once in a while in a long...
Suppose completion times, in minutes, for new marketing ads have an unknown distribution with mean 296 and standard...
Suppose completion times, in minutes, for new marketing ads have an unknown distribution with mean 296 and standard deviation 37 minutes. A sample of size n = 52 is randomly taken from the population and the mean is taken. Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution? Select the correct answer below: O 0.71 O4.10 05.13 06.16 7.70 O 3700
Suppose x has a distribution with a mean of 90 and a standard deviation of 3....
Suppose x has a distribution with a mean of 90 and a standard deviation of 3. Random samples of size n = 36 are drawn. (a) Describe the x distribution and compute the mean and standard deviation of the distribution. x has ---Select--- a normal a geometric an unknown a Poisson a binomial an approximately normal distribution with mean μx = and standard deviation σx = . (b) Find the z value corresponding to x = 91. z = (c) Find P(x...
The lengths, in inches, of adult corn snakes have an unknown distribution with a population mean...
The lengths, in inches, of adult corn snakes have an unknown distribution with a population mean of 61 inches and a population standard deviation of 8 inches. Samples of size n-64 were randomly drawn from the population. Using the Central Limit Theorem for Means, what is the mean for the sample mean distribution?
Suppose the daily customer volume at a call center has a normal distribution with mean 4,900...
Suppose the daily customer volume at a call center has a normal distribution with mean 4,900 and standard deviation 700. What is the probability that the call center will get fewer than 4,400 calls in a day? Please specify your answer in decimal terms and round your answer to the nearest hundredth
A population of values has a normal distribution with
μ=121.3μ=121.3 and σ=57.2σ=57.2. You intend to draw a random sample
of size n=27n=27.
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¯=
ule 7 The Central Limit Theorem Due in 6 hours, 52 A population of values has a normal distribution with y = 121.3 ando = 57.2. You intend...
31. According to the Central Limit Theorem, for random samples, what is the approximate shape of the sampling distribution of x-bar when the population distribution is non-Normal? Always the same as the shape of the population O Always Normal, even if the sample size is small Approximately Normal if the sample size is large 32. Choose the probability that best matches the following statement: "This event is very unlikely, but it will occur once in a while in a long...
Suppose completion times, in minutes, for new marketing ads have an unknown distribution with mean 296 and standard deviation 37 minutes. A sample of size n = 52 is randomly taken from the population and the mean is taken. Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution? Select the correct answer below: O 0.71 O4.10 05.13 06.16 7.70 O 3700
The lengths, in inches, of adult corn snakes have an unknown distribution with a population mean of 61 inches and a population standard deviation of 8 inches. Samples of size n-64 were randomly drawn from the population. Using the Central Limit Theorem for Means, what is the mean for the sample mean distribution?
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