Suppose a simple random sample of size n=49 is obtained from a population with μ=85 and σ=28. ​(a) Describe the sampling distribution of x. ​(b) What is P x>89.4​? ​(c) What is P x≤77​? ​(d) What is P 81.8

Q: What is the z-score corresponding to Q1 z =   For a standard normal distribution, determine P(z…

A: for the standard normal distribution the first quartile is -. 67 (using . 2514 for . 25)

Q: 1) Suppose that the sampling distribution of size 30 has a mean of 11 and standard deviation of 5.…

A: 1)Givensample size(n)=30Mean(μ)=11standard deviation(σ)=5

Q: For a population with µ = 60 and σ = 20, the Sampling distribution of the Mean, based on n = 16 will…

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,sample size(n)=40population mean(μ)=20standard deviation(σ)=5

Q: A law school with a total enrollment of 5000 students is known to have 40% women in its student…

A: Expectation:Denote π as the true population proportion of women in the law school. Hence, π =…

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: From a normal distribution with μ = 26 and σ = 6.3, samples of size 39 are chosen to create a…

A: From a normal distribution with μ = 26 and σ = 6.3, samples of size 39 are chosen to create a…

Q: For a population with µ = 60 and σ = 20, the Sampling distribution of the Mean, based on n = 16 will…

A:

Q: Suppose a simple random sample of size n = 10 is obtained from a population with u = 65 and o = 19.…

A: Suppose we draw a random sample of sufficiently large sample size (n) from a population whose mean…

Q: From a normal distribution with μ = 49.3 and σ = 5.23, we are selecting samples of size 48 and…

A: see the handwritten solution

Q: A simple random sample of size n=16 is obtained from a population of student heights that is…

A: Here first option is correct i...e, yes, the sampling distribution is normally distributed because…

Q: A quality control inspector routinely takes random samples of 200 cans of fruit cocktail produced in…

A: The approximate distribution of the sample proportion is given as a normal distribution given as:…

Q: According to a recent poll, 71% of adults who use the Internet have paid to download music. In a…

A: given information: n=750 p^=0.71 when sample size is large the distribution of sampling distribution…

Q: If x follows a distribution not known to be normal, then to assume that the distribution of the…

A: Solution: From the given information, the distribution of X is not known.

Q: The annual salary for one particular occupation is normally​ distributed, with a mean of about…

A: Given information- Population mean, µ = 120,000 Population standard deviation, σ = 20,000 Sample…

Q: From a normal distribution with μμ = 35 and σσ = 4.4, samples of size 38 are chosen to create a…

A: Thank you for posting the question. Since you have asked multiple question, we will solve the first…

Q: From a normal distribution with μ = 22.9 and σ = 4.63, we are selecting samples of size 62 and…

A: The given mean value is 22.9 and the standard deviation is 4.63. The sample size is 62. The variable…

Q: Consider a sampling distribution with p=0.15 and samples of size n each. Using the appropriate​…

A:

Q: A simple random sample of size n=16 is obtained from a population of student heights that is…

A: A simple random sample of size  n=16 obtained from a population of student heights that is normally…

Q: Suppose a simple random sample of size n= 10 is obtained from a population with u= 67 and o = 19.…

A: (a) The given data will be suitable for t-test only.  Had the sample size n> 30; then we would…

Q: Suppose the number of claims per year is a Poisson distribution with a mean rate of A claims per…

A: given that,The number of claims per year follows p(λ) poisson distribution with mean λAnd the prior…

Q: From a normal distribution with μ = 76 and σ = 6.3, samples of size 48 are chosen to create a…

A: See the handwritten solution

Q: The mean of the sampling distribution of x, – x, is: always 0 always positive always ui - u2 always…

A:

Q: Suppose a simple random sample of size n = 200 is obtained from a population whose size is N =…

A: Given Data population proportion,p = 0.8 sample size n = 200 mean of the sampling…

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: At a large university, 58% of all students live on campus. Suppose a random sample of 275 students…

A:

Q: A fair six-sided die will be rolled fifteen times, and the numbers that land face up will be…

A: Mean = 3.5 Standard deviation = 2.92 Standard deviation of the difference in mean of sampling…

Q: For a normal distribution with μμ = 29 and σσ = 3.4, determine the z-score of 33.9708. z-score =…

A:

Q: What happens to the sampling distribution of the mean when a population is already normally…

A:

Q: Suppose a simple random sample of size n = 50 is obtained from a population whose size is N= 20,000…

A: Given

Q: Suppose that the weights of all packages of corn flour are normally distributed with a mean of 1000…

A:

Q: A simple random sample of size n=47 is obtained from a population with μ=55 and σ=9. ​(a) Does the…

A:

Q: (b) The delivery times for all food orders at a fast-food restaurant during the lunch hour are…

A: Given,sample size(n)=16mean(μ)=6.7standard deviation(σ)=2.1

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

A: The sampling distribution of the sample mean is given by : E(X)=μS.D(X)=σn So, the mean of the…

Q: Please prove it

A: Given information: The investigator is specially interested to estimate the parameter u of a…

Q: A) Suppose that a random sample of size 64 is to be selected from a population with mean 40 and…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The sampling distribution of x is skewed right/skewed left /normal with μx = _____ and σx = _____

A: Given information mean μ=156 days standard deviation σ=12 days. Sample size n = 19

Q: Under which circumstance will the distribution of sample means be normal? it is always normal only…

A: We have to find correct answer for given data..

Q: A simple random sample of size n=10 is obtained from a population that is normally distributed with…

A: Given that the population is normally distributed. So for any value of n the sampling distribution…

Q: In the library on a university campus, there is a sign in the elevator that indicates a limit of 16…

A: We have given that  Sample size n=16 , mu=150 ,sigma =29 X~N(mu,sigma^2) Z-score =(x-mu)/sigma

Q: From a normal distribution with μ = 84 and σ = 2.2, samples of size 42 are chosen to create a…

A: See the handwritten solution

Q: A fair six-sided die will be rolled fifteen times, and the numbers that land face up will be…

A:

Q: Suppose the daily attendance at Disneyland is normally distributed with mean 52 (thousand) and…

A: e. Given: μ=52, σ=8.3, n=15 The corresponding z-values needed to be computed are:

Q: Suppose a random sample of size n=25 taken from a very large population with the mean  μ= 90 and a…

A: Solution : Given : n = 25 μ = 90 σ = 6.4 Sampling distribution of the mean,  μx¯  = μ = 90 σx¯ = σn…

Q: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were…

A:

Q: Suppose a simple random sample of size  n = 50 is obtained from a population whose size is N =…

A:

Q: xbar for random samples of 2 observations roughly normal, strongly skewed, or triangular?

A: population is uniformly distributed then  sampling distribution of xbar for random samples of at…

Q: Find the mean, standard deviation of the sampling distribution of the means. Sample of size n were…

A: We have given that Mean(µ) = 25Variance(σ2) = 6.25  Sample size (n) = 25

Q: Suppose a simple random sample of size n= 10 is obtained from a population with u = 62 and o = 19.…

A: Solution: Given information: n= 10 Sample size μ=62  Population mean σ=19 Population standard…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.