The distribution of income in some Third World countries is considered very right skewed (many very poor people, very few middle income people, and even fewer wealthy people).Suppose we pick a country with a severely right skewed distribution. Let the average salary be $2,000 per year with a standard deviation of $8,000. We randomly survey 1,000 residents of that country.a. What is the sampling distribution of the sample mean, including name of the distribution, ___________, its mean, ___________ and standard error, ___________?

given data μ = 2000σ = 8000right skewed distribution n = 1000find sampling distribution of sample…

Answered: The distribution of income in some…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A survey was done of 40 people. They were asked: What type of movies would you like to see at this theater? Family, children, comedy, sci-fi, horror, action, or double feature? 40 people answered the following: Family: 37 Children: 18 Comedy: 26 Sci-fi: 12 Horror: 6 Action: 18 Double Feature: 19 Find the following: Probability Frequency Mean Median Mode Variance or Standard Deviation
According to one study, brain weights of men are normally distributed with a mean of 1.10 kg and a standard deviation of 0.12 kg. Use the data to answer parts (a) through (e). Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. Determine the sampling distribution of the sample mean for samples of size 3. Interpret your answer in terms of the distribution of all possible sample mean brain weights for samples of three men. The mean of the sample mean is µ, kg. (Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is o, = kg. (Round to four decimal places as needed.) Interpret these answers in context. For the brain weights have a normal distribution with a mean of kg and a standard deviation of kg. (Type integers or decimals rounded to four decimal places as needed.) b. Repeat part (a) for samples of size 12. The mean of the sample mean is µ;…
Consider a sample with data values of 10, 20, 15, 16, and 18. Compute the range and interquartile range.
a.True or False: There will be more dispersion in the sampling distribution of the sample mean than in the population. b. State the standard error of the mean:
Fund the mean and variance for the following sample data 12, 16, 11, 23, 9, 17, 12, 25
www.census.gov/newsroom/press-releases/ For each sample size in the table, give the mean and SE of the sampling distribution of p. a. sample size, n standard error, SE mean 10 100 1000 b. What happens to the mean as the sample size increases? What happens to the SE as the sample size increases? c. Complete this summary sentence: If you take a random sample of 100 people from the L.A. metro area, the expected proportion who speak a language other than English at home is give or take
2
What is one indication that there are paired samples in a data set? Choose the correct answer below. O A. Knowing the value that a subject has in one group gives one no information about the value in the second group. OB. Each observation in one group is coupled with one particular observation in the other group. OC. The researcher is comparing two populations. O D. The researcher is working with two distinct groups in the data set.
There are three different ways I can go to work in the morning. I want to see if there is a difference in the distributions of travel-times between the three different ways. The sample data is depicted below. I claim there is a difference in mean travel times between the three different routes. I cannot guarantee that the distributions of these travel times are Normal. Travel Time in Minutes Interstate 22 22 21 23 22 21 Route 15 22 18 20 18 Back Roads 19 19 18 19 22 (a) Enter the rank values in the same order as in the original sample. Interstate Route 15 Back Roads (b) Give the value of the test statistic: (c) Test my claim at the 10% significance level.Enter the critical value: There is sufficient evidence to conclude that the population means are not equal.YesNo (d) Does your conclusion change at the 5% significance level?YesNo
You answered this question: What is the Sample Variance for the following numbers:52, 62, 52, 45, 41
could you please answer with paper and pen?
The cities with the highest life expectancy are Nowhereville: 84.6 years; Somewhereopolis: 79.8 years; Kinch City: 79.8 years; Tortuga: 84.6 years; Euler Town: 78.5 years; Godelville: 84.6 years; Sirap: 90.1 years. Find the mean, the median, and the mode. ..... Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mean life expectancy is years. (Round to the nearest tenth as needed.) B. The mean does not exist. Find the median. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median life expectancy is years. (Round to the nearest tenth as needed.) B. The median does not exist. Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode life expectancy is years. (Round to the nearest tenth as needed.) O B. The mode does not exist.

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