If the mean and standard deviation of a population are 40 and 2, respectively and the sample size is 22. The mean of sampling distribution is most likely to be equal to 21. * True O False

Q: If a population has a mean of 228.8 and a standard deviation of 35.5 then a sampling distribution…

A: Given that, mean is 228.8 and standard deviation is 35.5. We will use z-standard normal…

Q: A population has a standard deviation of 25 and a mean of 300. Given a random sample of size 100,…

A:

Q: If you want to be 99​% confident of estimating the population mean to within a sampling error of ±25…

A: The provided information’s are:Standard deviation (σ) = 125.Sampling error (E) = ±25Confidence level…

Q: If a distribution is normal, then it is not possible to randomly select a value that is more than 4…

A: Given : We have given normal distribution .

Q: If 80% of the applicants are able to pass a driver's license proficiency road test. Find the mean,…

A:

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: We have given that Mean(µ) = 281 Population Standard deviations (σ) = 47 Sample size (n) = 50

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: The number of Grade 11 learners per section in Kasiglahan Village Senior High School has a mean of…

A: The population mean is 56.3. The population standard deviation is 8.6. We have to write which…

Q: The mean and standard deviation of a population are 200 and 20, respectively. Suppose samples of…

A: Given : μ = 200 , σ= 20 and n= 36

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…

A: We have to find given probability.....

Q: If the average of a random variable is 95 and the standard deviation is 20 then the proportion of…

A: Let X denotes the random variable with mean μ = 95 and SD σ = 20. Let the proportion of observations…

Q: If the probability of defective bolt is 0.1, find the mean and the standard deviation for the number…

A: Given the probability of a defective bolt is, 0.1 That is, p=0.1 The total number of bolts is, n=400…

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: Given,sample size(n)=60mean(μ)=281standard deviation(σ)=47

Q: Suppose a probability and statistics class took an exam that had a mean of 60 and a standard…

A: Given, E(X)=60 SD(X)=12   After 10 Point curve Let Y be new variable.

Q: Suppose you know that the distribution of sample proportions of nonresidents in samples of 200…

A: Let p^ denotes the sample proportion which follows normal distribution with mean 0.46 and standard…

Q: The population standard deviation and sample standard deviation are of the same value if the…

A: The study is about the population standard deviation and sample standard deviation.

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A:

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: If X is normally distributed with a mean of 70 and a standard deviation of 4.55. If you take a…

A: Provided information: Mean = 70 Standard deviation = 4.55 Sample size = 120

Q: Suppose a population that has mean 90 and standard deviation 20. How many observations, n, should…

A:

Q: If a distribution is normal with a mean 12 and a standard deviation 3, then the median is also 12.…

A: Normally distribution is a continuous probability distribution. In normal distribution curve is a…

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: If a distribution is normal with mean 11 and standard deviation 4, then the median is also 11. O…

A: Given that, the distribution is normal with mean 11 and standard deviation 4.

Q: If the mean is two, the standard deviation is one, and a value for a normally distributed random…

A:

Q: Suppose that for a random sample , the mean is 4 and the coefficient of variation is 87.5 % then the…

A:

Q: A population is normally distributed and has a mean of 50 and a standard deviation of 5 If we…

A: As we know the empirical rule of 68 - 95 - 99.7 that is the percent value that are one, two or three…

Q: Suppose that the sampling distribution of size 10 has a mean of 30 and standard deviation of 3.…

A:

Q: If the true mean is .9560 with a standard deviation of .0020 what is the sampling distribution of X

A: if the true mean is 0.9560 with a standard deviation of 0.0020 i.e.  μ=0.9560  and σ = 0.0020

Q: A population has µ = 50 and o - 5. If 10 points are added to every score in the population, what are…

A:

Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: Given that the population standard deviation equals 273 and the sample size consists of 741…

A: Given information- Population standard deviation, σ = 273 Sample size, n = 741 We have to find the…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Solution: We are given:

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A:

Q: In a standardized exam the mean score is 400 with a standard deviation of 50. If a random sample of…

A: Given that  μ= 400 , σ= 50 , n = 25

Q: Suppose that we will randomly select a sample of 106 measurements from a population having a mean…

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

Q: If the mean of the random variable with Poisson distribution is 4, which of the following is its…

A: Solution: Let X be the Poisson random variable with mean λ=4 X~P(λ=4) The formula for Poisson…

Q: Suppose the standard deviation of a sample is 5.8. Find the variance. Do not round.

A: Given: sample standard deviation = 5.8

Q: A politician takes an SRS of 75 citizens in a county to see what proportion of citizens sampled are…

A: A politician takes an SRS of 75 citizens in a county to see what proportion of with their standard…

Q: If a normal distribution has a mean of 15.15 and standard deviation of 3.33, then what proportion of…

A:

Q: If a distribution is normal with μ = 60 and σ = 15, what proportion of the scores fall between 60…

A: If X~N(μ,σ2), then Z=X-μσ is called the standard normal variate. The mean and variance of a standard…

Q: If the sample size is 100 and the population standard deviation is 20, then the standard deviation…

A: Given  True or false question Sample size=100  Population standard deviation=20  We need to…

Q: Suppose we are told the sampling distribution developed from a sample of size 900 has a mean of…

A: Consider the variable of interest is X.

Q: If the sample size is 100 and the population standard deviation is 20, then the standard deviation…

A: Standard error:The standard deviation of the sampling distribution of the mean is called standard…

Q: IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

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

Q: a distribution with a mean of 100 and a standard deviation of 15, what is the probability that a…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given dataMean = 35Standard deviation = 7.5Sample size (n) = 40probability that the sample mean will…

Q: If one normal distribution has a standard deviation of 5, and another has a standard deviation of…

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Q: If a sample size is 100 and the population standard deviation is 30 then the standard deviation of…

A: Given: Sample size (n) = 100 population standard deviation =30

Q: If the standard error of the sample mean is 5, for samples of size 25, what is the popu lation…

A: