sample is selected from a population with mean ? = 99 and standard deviation ? = 10. For which of the sample sizes would it be reasonable to think that the x sampling distribution is approximately normal i

Q: For random samples of size n- 25 selected from a normal distribution with a mean of u- 50 and a…

A: Define the Random Variable, Xi : Value of the i th random variable mean, µ = 50, standard deviation…

Q: For random samples of size n=16 selected from a normal distribution with a mean of 75 abd standard…

A: Given Information Mean µ = 75 Standard deviation(σ) = 20

Q: Random samples of size 81 are taken from an infinite population whose mean is 66 and standard…

A:

Q: A simple random sample of size n=40 is obtained from a population with a mean of 20 and a standard…

A: Given, n = 40 μ = 20σ = 5       We have to check the given distribution follows normal distribution…

Q: If x represents a random variable with mean 118 and standard deviation 35, then the standard…

A: According to the given information, we have Mean = 118 Standard deviation = 35 Sample size = 49

Q: x represents a random variable with mean 144 and standard deviation 36, then the standard deviation…

A:

Q: If x represents a random variable with mean 110 and standard deviation 14, then the standard…

A: If x represents a random variable with mean 110 and standard deviation 14. μ=110σ=14 sample…

Q: If x represents a random variable with mean 117 and standard deviation 40, then the standard…

A: Given : Mean , u = 117  standard deviation, σ = 40

Q: the z- value for a given value x of the random variable X is z= 1.96, and the distribution of X is…

A:

Q: Suppose that you want to estimate the mean time it takes drivers to react following the application…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: If x represents a random variable with mean 125 and standard deviation 20, then the standard…

A:

Q: A random sample is selected from a normal population with a mean of  = 30 and a standard deviation…

A: a. Null hypothesis: µ=30. Alternative hypothesis: µ≠30. Here, the sample mean, M is 33. Population…

Q: A random sample is selected from a normal population with a mean of μ = 40 and a standard deviation…

A: The hypotheses can be constructed as: Null hypothesis: H0: µ = 40 Alternative hypothesis: H1: µ ≠ 40…

Q: If x represents a random variable with mean 132 and standard deviation 50, then the standard…

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Q: If x represents a random variable with mean 125 and standard deviation 36, then the standard…

A: For a random sample of 81, X –bar follows normal with mean value of 125 and standard deviation of 4.…

Q: In a normal distribution with mean 375 and standard deviation 48, how large a sample must be taken…

A: It is an important part of statistics. It is widely used.

Q: A random sample of n = 16 scores is obtained from a normal population with a mean of µ = 100 and a…

A:

Q: The distribution of age for players of a certain professional sport is strongly skewed to the right…

A: Given: The distribution of age for players of a certain professional sport is strongly skewed to the…

Q: An entire population has mean of μ = 17.4 and standard deviation of σ = 3.2. By using Chebyshev’s…

A: Given: Mean of population, μ=17.4 Standard deviation, σ=3.2 Objective of the question is to…

Q: If x represents a random variable with mean 137 and standard deviation 35, then the standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: A researcher wants to check the claim that a certain species of reptile spend an average of 18.9…

A: Given that, Sample size n=29 Sample mean x¯=18 Sample standard deviation s=3

Q: A simple random sample of size n= 40 is drawn from a population. The sample mean is found to be…

A: Given  n=40, x̄=104.7, s=21.6 , ɑ=0.05, μ=100

Q: The mean wage per hour for all 5000 employees who work at a large company is $27.50, and the…

A:

Q: If the sample mean and sample standard deviation are found to be 90 and 15 respectively and the…

A: Given statement: Sample mean and sample standard deviation are 90 and 15. Sample size is n= 35 Then…

Q: A random sample of 36 values is drawn from a mound-shaped and symmetric distribution. The sample…

A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Random samples of size 64 are taken from an infinite population whose mean is 50 and standard…

A: Givensample size(n)=64mean(μ)=50standard deviation(σ)=16

Q: sample is selected from a population with mean μ = 98 and standard deviation σ = 10. For which of…

A: According to the scenario, A random sample is selected from a population with mean μ = 98 and…

Q: When testing a hypothesis about a single mean, if the sample size is 20, the population standard…

A:

Q: The GPAs of all 5540 students enrolled at a university have an approximately normal distribution…

A: The sampling distribution is the representation of all possible samples drawn from the large…

Q: 1. If the standard deviation of the mean for the sampling distribution of random samples of size 36…

A:

Q: The number of years of education of self-employed individuals in the United States has a population…

A:

Q: The population distribution at right has a mean of 8 and a standard deviation of 6. The sampling…

A: From the given information, μ=8σ=6 For the first histogram, the spread of the data is low and the…

Q: Suppose X is normally distributed with H = 126 and unknown o. A sample of 27 observations yields a…

A: Given information Hypothesized mean µ = 126 Sample size (n) = 27 Mean x̅ = 122 Standard deviation…

Q: Random samples of size 25 are taken from an infinite population whose mean is 160 and standard…

A:

Q: A random sample is selected from a normal population with a mean of μ = 30 and a standard deviation…

A: State the hypotheses That is, there is no sufficient evidence to conclude that treatment has a…

Q: Suppose a random sample of n = 25 observations is selected from a population that is normally…

A:

Q: For random samples of size n = 16 selected from a normal distribution with a mean of µ = 75 and a…

A: sample size: n = 16mean: µ = 75 standard deviation: σ = 20   To find c such that, P( x¯ <c )…

Q: If x represents a random variable with mean 131 and standard deviation 40, then the standard…

A: Given that ; u = 131  ? = 40 Sample size ( n) = 100 Here we use the concept of standard normal…

Q: If the sample mean and sample standard deviation are found to be 90 and 15 respectively and the…

A:

Q: Suppose that a Math test has a mean score 81 with a standard deviation 10, and samples with size 100…

A:

Q: Suppose weights of running shoes have an unknown distribution with mean 11 and standard deviation 2…

A: The standard deviation from the sample mean distribution is obtained below: From the information,…

Q: Suppose a random sample of size 1000 is selected from a large population where the population mean…

A: Obtain the standard error of the mean of the sampling distribution. The standard error of the mean…

Q: Suppose that the distribution for a random variable x is normal with mean 15 and standard deviation…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: If X is normally distributed random variable with a standard deviation of 16. Find the mean given…

A:

Q: If x represents a random variable with mean 137 and standard deviation 16, then the standard…

A: Let X be the random variable. It is given that X is normally distributed with mean 137 and standard…

Q: "suppose that a random sample of size 20 is taken from a normal distribution with unknown variance…

A: Given: n=20 μ=Unknownx=10σ2=1Andμ(Posterior)=15σ(Posterior)=0.1

Q: ples of size 100 are drawn randomly from a normal population that has a mean of 20 and a standard…

A: Given: μ=20, σ=5, n=100 The corresponding z-value needed to be computed: The probability of…

Q: Group A has 12 people and it is a random sample and they have an average heart rate of 100 and their…

A:

Q: A random sample is selected from a normal population with a mean of μ = 40 and a standard deviation…

A: a. The hypothesis is, Null hypothesis: H0: There is no sufficient evidence to conclude that the…

Q: Suppose that a simple random sample is taken from a normal population having a standard deviation of…

A: Given, n=64 σ=5.5α=0.05MOE=Zα/2*σn