For any distribution what is the score that separates the highest 10% from the rest called?

Q: for CEO salaries throughout the united states (not just the data set we used in class) which has a…

A: we know that distribution skewed to right means positively skewed data. In this case, the measures…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.42.…

A:

Q: You are considered to have an intellectual disability (ID) if you score in the lowest 2.5% of the…

A: Given data, μ=100 σ=15 P(X<x)=2.5%=0.025

Q: According to a gallup survey of boys 77% of boys had played computer games in the past week compared…

A: Let p1 be the percentage of boys had played computer games  p2 be the percentage of girls had played…

Q: The median has a sampling distribution. Explain why or why not?

A:

Q: Karen wants to estimate the mean number of siblings for each student in her school. She records the…

A: The sample is the sub-part of the population. Karen wants to estimate the mean number of siblings…

Q: Out of 600 people sampled, 120 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the provided information, Sample size (n) = 600 120 said they prefer Coke over Pepsi that is x…

Q: Explain t Distribution? & it's Prerequisites?

A: From the given question, The student’s t-distribution can be defined as:

Q: Suppose the true proportion of voters in the county who support a restaurant tax is 0.64. Consider…

A: We have given that  The true proportion of voters in the county who support a restaurant tax is…

Q: For what sampling distribution works for?

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

Q: The mean of a distribution is 23, the median is 24 and the mode is 25.5. It is most likely that this…

A:

Q: a sampling distribution can be regarded as approximately normal when which conditions are met? In…

A: A sampling distribution is a probability distribution of a statistic obtained from a larger number…

Q: Describe about the Sampling Distribution of z.

A:

Q: As the sample size​ increases, the mean of the sampling distribution: a. gets larger b. stays the…

A: We know that the sample size means the number of units in the sample.  We know that by the central…

Q: what is the 95th percentile in the t-distribution if the sample size is 25?

A: Given Information: n=25Type of distribution=t distributionTo calculate=95th percentile

Q: for the scores from a sample 2,9,6,5,7,5,5,6,2,4,3,9,4,8,3,2,5,4,9,9 construct a frequancy…

A: We want to make frequency distribution table

Q: In a distribution of scores, the mean is 12, the median is 8 and the mode is 4. Describe the shape…

A: A distribution is said to be positively skewed / right skewed if Mode > Median > Mean  and…

Q: What does the true sampling distribution serves?

A:

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: For a perfectly symmetrical distribution with µ= 30, what is the median?

A: Given: for a Perfectly Symmetrical Distribution with µ = 30,   To Find: median

Q: Out of 300 people sampled, 153 said they prefer Coke over Pepsi. What is the point estimate for the…

A: Consider that p is population proportion of ALL people that prefer Coke over Pepsi.

Q: 3. Explain why the sampling distribution of the sample proportion is assumed to be Normal. Show your…

A:

Q: oes the size of a sample influence the shape of the distribution?

A: A sample is drawn randomly from a population to draw some inferences about the population. It is not…

Q: Explain about the Sampling Distribution of mean 1 less mean 2.

A:

Q: Describe the sampling distribution of the difference between two sample means large samples.

A: Our aim is to describe the sampling distribution of the difference between two sample means.

Q: The mean of the sampling distribution of the sample mean is smaller than the mean of the…

A: According to Central limit theorem, when repeated sample of size n is drawn from a population with…

Q: As the sample size increases, does the mean of the sampling distribution of sample mean increase?

A: According to law of large numbers, as sample size increases, the mean of sampling distribution is…

Q: Top 5% of the sampling distribution of mean is as its central value? a. no b. yes c. always d. may…

A: The Sampling Distribution of the Sample Mean.

Q: sampling distribution?

A: The sampling distribution is a probability distribution obtained from a large number of samples with…

Q: What are the three important characteristics of the sampling distribution of the mean?

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

Q: Suppose the true proportion of voters in the county who support a restaurant tax is 0.4. Consider…

A: Here distribution is binomial with p= 0.4

Q: In a frequency distribution the coefficient of skewness based on quartiles is 0.6. If the sum of the…

A:

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.35.…

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

Q: What does the sampling distribution of the mean allows determining?

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

Q: Explain why the median is often preferred to the mean as a measure of central tendency for a skewed…

A: 22. The value that is used for describing the full data set using the central position within the…

Q: Indicate whether the five number summary corresponds most likely to a distribution that is skewed to…

A: From the information, the five number summary is given below:Minimum is 100, Q1 is 110, median is…

Q: What is the sampling distribution of x?

A:

Q: In a normal distribution, what percentage of scores falls below and score of -2.33

A:

Q: Get the variance of the sampling distribution

A: The sample mean is given by 87.8 and we have to calculate the sample variance.

Q: i. Find the mean and the median compensation of the executives. ii. Comment on the skewness of the…

A:

Q: Suppose the true proportion of voters in the county who support a restaurant tax is 0.37. Consider…

A:

Q: Make your own example of mean of a sampling distribution. Also, construct the sampling distribution.

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

Q: Make your own example of mean and variance of a sampling distribution. Also, construct the sampling…

A: Given that We have to Make own example of mean and variance of a sampling distribution. Also,…

Q: How would you describe each distribution?

A: According to a gallup survey of boys 77% of boys had played computer games in the past week compared…

Q: . Suppose the proportion of American adults who work at home is 40%. For a random sample of 100…

A: Solution-: Given: n=100, P=0.40 (Population proportion) Let, p^- be the sample proportion

Q: Q3. The time (in seconds) that a random sample of employees to complete a task is 35, 14, 37, 28,…

A: (a). Obtain the value of mean. The value of mean is obtained below: Thus, the value of the mean is…

Q: Sketch the sampling distribution of xand calculate the probability that the sample mean will be…

A: here given, sample size n = 250 population mean and standard deviation is as follows  μ = 188and…

Q: What is the shape of the distribution?

A: Shape of this distribution: If the data is equally distributed, then the shape of the distribution…

Q: if the population mean is 12.45 what is the mean of the sampling distribution of its means?

A: Given : Population mean(μ) =  12.45

Q: The sample mean is obtained by dividing the sum of all sampled values divided by On-1 On-3 On-2 On-0

A: