Suppose we take a random sample of 30 companies in an industry with 200 companies. We calculate the sample mean of the ratioof cash flow to total debt for the prior year. We find that this ratio is 23%. Subsequently, we learn that the population cash flow tototal debt ratio (taking into account all 200 companies) is 26%. What is the explanation for the discrepancy between the samplemean and population mean?O Data mining biasO Central Limit TheoremO Sampling errorO Standard errorNone of the other answers explains it

A random sample of 30 companies is selected from a population of 200 companies.

Answered: Suppose we take a random sample of 30…

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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1. For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.The National Council of Small Businesses is interested in the proportion of small businesses that declared Chapter 11 bankruptcy last year. Since there are so many small businesses, the National Council intends to estimate the proportion from a random sample. Let p be the proportion of small businesses that declared Chapter 11 bankruptcy last year. (a) If no preliminary sample is taken to estimate p, how large a sample is necessary to be 95% sure that a point estimate p̂ will be within a distance of 0.11 from p? (Round your answer up to the nearest whole number.) small businesses(b) In a preliminary random sample of 30 small businesses, it was found that six had declared Chapter 11 bankruptcy. How many more small businesses should be included in the sample to be 95% sure that a point estimate p̂ will be within a distance of 0.110 from p? (Round your answer…
1. True or False The sampling distribution of the mean will have the same mean as the original population from which the samples were drawn.
Che
1. Suppose the proportion of American adults who work at home is 40%. For a random sample of 100 American adults, what is the distribution of the sample proportion?
In a recent Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. They also report that the "margin of sampling error is plus or minus 4%" What is the sample being used? R F O U.S. adults (age 18 and over) O 1012 randomly selected U.S. adults OU.S. adults satisfied with K-12 education O U.S. adults dissatisfied with K-12 education C e Textbook and Media Save for Later O % 18 G 7 T Y U O 8 9 TH J K L Attempts: 0 of 1 used 0 Submit Answer 55°F Backsp
As the sample size (n) increases, does the sampling distribution of the sample mean stay the same, look more and more like a uniform distribution, or become more tightly clustered around the population mean?
Suppose I want to sample the household incomes for EBR parish. Let's say I start with a simple random sample of 100 residents and calculate the sample mean. How would the sampling distribution of change if I increase the sample size to 1,000 residents?
8. According to law enforcement records, the proportion of all drivers who have received at least one speeding ticket is 0.20. Let’s say we choose a large random sample of drivers and determine the proportion who have received at least one speeding ticket. We know, if the sampling method is repeated, that the sample proportion will vary from sample to sample. In fact, if we look at the sampling distribution in this case, we will see a distribution that is Normal in shape, with a mean (or center) of 0.20 and a standard deviation of 0.036. From this information, we know the middle 68% of this distribution will be between approximately what two values? 1. 0.19 and 0.21 2. 0.152 and 0.248 3. 0.1996 and 0.2004 4. 0.176 and 0.224 5. 0.164 and 0.236

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