he 4 conditions necessary to assume the sampling distribution of sample proportions follows a Normal distribution.

Q: Calculate the mean and the standard deviation of the sampling distribution of possible sample…

A: a) Given data, n=384 p=0.4 Calculate the mean and the standard deviation of the sampling…

Q: Beyond representative sampling, what assumptions are needed to satisfy the requirements of a…

A: The correct answer is, the number of successes and failures should both at least 5 and the number of…

Q: calculate the standard error of the sampling distribution of the sample statistic

A: Let S.E denote Standard Error. Let sample mean be the sample statistic.

Q: Discuss the random sampling and the sampling distribution of the sample average?

A: Simple random sampling: A simple random sample of size n is collected from a large population where…

Q: size

A: As per the weak law of large numbers, every distribution tends to normal distribution as we increase…

Q: As the sample size​ increases, the standard deviation of the sampling distribution ▼   gets larger.…

A: Here we need to find the change that happens for the standard deviation of the sampling distribution

Q: The mean wage for all employees who work at a large company is $156 and the standard deviation is…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: Find the 60th percentile of the standard normal distribution and draw the bell curve( round to the…

A: we have to find 60 th percentile..

Q: What are other sampling distributions for mean?

A: Sampling distributions : The probability distribution of a given statistic based on a random sample.…

Q: Describe the indicated sampling distribution model. this city for 5 years. Let y n Statistics from a…

A:

Q: According to a survey in a country, 25% of adults do not own a credit card. Suppose a simple random…

A: Given: Proportion of adults do not have own credit card = p =25100=0.25

Q: Consider random samples of size 900 from a population with proportion 0.75. Find the standard error…

A: Given data, n=900 p=0.75 Standard error(SE)=?

Q: For a normal distribution, identify the z-score location that would seperate the distribution into…

A: Given information a) 20% in the tail on the right-hand side means P (Z > z) = 0.20 P (Z < z) =…

Q: Although, in general, you cannot know the sampling distribution of the sample mean exactly, by what…

A: Sampling distribution of a sample mean:

Q: If the population standard deviation is 1.3 and the sample size is 12, then compute the standard…

A: From the provided information,Population standard deviation  = 1.3Sample size (n) = 12

Q: A random variable is normally distributed with the mean of $1500.00 and standard deviation of $96.…

A:

Q: How does a sample size affect how close a normal distribution of either sample means or sample…

A: As per Central limit theorem, the sampling distribution of sample mean or sample proportion follow…

Q: Suppose the true proportion of voters in the county who support an independent candidate for county…

A: We have given that,  True proportion or probability (p) = 0.42 Then,  q= 1 - p = 1- 0.42 = 0.58 q=…

Q: When simple random samples are drawn from a population that is normally distributed, the sampling…

A: According to the definition of Central limit theorem, the sampling distribution of the sample means…

Q: (c) What is the probability that in a random sample of 200 adults, between 20% and 25% do not own a…

A:

Q: According to a survey in a country, 35% of adults do not own a credit card. Suppose a simple random…

A: (a) The sample size is 700 and proportion is 35%. That is, n=700,p=0.35.

Q: Write down the properties of Hypothesized Sampling Distribution.

A:

Q: Give an example of computing an appropriate sample size using the length of the interval.

A: Solution : Formula for computing sample size using the length of interval is, n = Zα2σd2 where , σ =…

Q: Find the 50th percentile of the standard normal distribution and draw the bell curve?

A: The required answer is below:

Q: In a normal distribution, as the sample size increases, so does the graphʹs symmetry true or false?

A: We know that  In a normal distribution mean median and mode are equal.  X~N( μ , ?^2 )

Q: Coal is carried from a mine to a power plant in hopper cars on a long train. The automatic car…

A: Given: The weight of the coal follows a normal distribution x~N(μ,σ) μ=75σ=0.8 n=20.

Q: Teen drivers (those aged 15-19) spend an average of 25 minutes behind the wheel each day. Assume…

A: From the provided information, Mean (µ) = 25 Standard deviation (σ) = 7.6 X~N (25, 7.6)

Q: As a general rule, approximately what is the smallest sample size that can be safely drawn from a…

A:

Q: What are the functions of sampling distribution?

A: A sampling distribution is a distribution of the likelihood of a statistic derived from a greater…

Q: How does the sample size affect how close to normal a distribution of either sample means or sample…

A: The statistic measures the characteristics of samples to estimate the population.

Q: Find the mean and standard deviation of the indicated sampling distribution of sample means. Then…

A: Sample size=25

Q: Explain Standard Error of the Sampling Distribution.

A:

Q: What is the notion of sampling distribution?

A:

Q: what the requirements are to assume that the sampling distribution of sample means does have a…

A: The objective of this question is to understand the conditions under which we can assume that the…

Q: Define the standard error for the sampling distribution of proportions.

A: Introduction: The standard deviation of the distribution of sample proportion is called the 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.