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The following data represent the number of days absent per year in a population of six employees of a small company: 1 3 6 7 9 10 a. Assuming that you sample without replacement, select all possible samples of n = 2 and construct the sampling distribution of the mean. Compare the mean of all the samples means and also compute the population mean. Are they equal? What is the property called? Sampling Distribution of the Mean for n=2 Sample Number Outcome Sample Mean X 1 1.3 X=2 2 1.6 X=3.5 3 1.7 X=4 4 1.9 X=5 5 1.1 X=5.5 6 3.6 X=4.5 7 3.7 X=5 8 3.9 X=6 9 3.1 X=6.5 10 6.7 X=6.5 11 6.9 X=7.5 12 6.1 X=8 13 7.9 X=8 14 7.1 X=8.5 15 9.1 X=9.5 Total X=90 Mean of All possible Sample Means: X=90/15=6 Mean of All Population Elements: (1+3+6+7+9+10)/6=6 Both mean are equal to 6, this property is called Un-Biasedness. b. Repeat (a) for all the sampling distribution of the mean in (a) and (b) . Which sampling distribution has less variability? Why? c. Assuming that you sample with replacement, repeat (a) through (c) and compare the results. Which sampling distribution have the least variability - those in (a) or (b) ? Why? Show your work!
A weight-loss clinic advertised that last month its patients, on average, lost 6 LBS . Assuming that average refers to the mean, which of the following claims must be true based on this information
The regression equation Salary = 25,000 + 3200 YearsExperience + 1400 YearsCollege describes employee salaries at Axolotl Corporation. The standard error is 2600. John has 10 years' experience and 4 years of college. His salary is $60,500. What..
Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
Briefly describe why life insurers typically invest most
examine statistical data consisting of records of car accidents on victorian roads and freeways in 2012. the victorian
In what order should the cars be processed through the facility that is the most efficient overall - How long from start to finish will it take to complete the processing the five cars?
The data in the table below is from a study conducted by an insurance company to determine the effect of changing the process by which insurance claims are approved. The goal was to improve policyholder satisfaction by speeding up the process and eli..
The portfolio assets are inverted in the Dow Jones fund
Calculate the mean and standard deviation and Based on these statistics, describe how these anthropometric data compare to the US male and Chinese female populations.
Suppose that you have 8 cards. 5 are green and 3 are yellow. The 5 green cards are numbered 1, 2, 3, 4, and 5. The 3 yellow cards are numbered 1, 2, and 3. The cards are well shuffled. You randomly draw one card.
What are the characteristics of a population for which it would be appropriate to use mean/median/mode? When would the characteristics of a population make them inappropriate to use?
The distribution of scores was approximately bell
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