When estimating the mean age of a population of 5000 individuals, a simple random sample of 50subjects is selected. Should the correction factor for a finite population be used in calculating thestandard error of the mean?a. Does not applyb. Noc. Yesd. Maybe

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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An Excel assignment counts for 0-10 points. The scores in a class of 12 students are recorded as follows:1 5 5 6 7 7 8 8 8 9 10 10 What is the deviation of the score 10 from the mean in 13a (recall that this involves a subtraction of the mean from the particular score)? I think I got answer but want to check.
Which statement below is correct? a. Standard deviation should be used when calculating z for a single score, while standard error should be used when calculating z for a sample mean. b. When calculating z for a single score or for a sample mean, the standard error should be used. c. Standard error should be used when calculating z for a single score, while standard deviation should be used when calculating z for a sample mean. d. When calculating z for a single score or for a sample mean, the standard deviation should be used.
Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675 the third year, 11,850 the fourth year, and 13,075 the fifth year. a. Find the mean, median, and mode of this data. b. Explain which measure of central tendency will best predict how many miles Gina will drive in the sixth year. a. mean= 12,700; median= 13,156; no mode; the mean is the best choice because it is representative of the entire data set. b. mean= 13,156; median= 12,700; mode= 3,628; the median is the best choice because it is not skewed by the high outlier. c. mean= 13,156; median= 12,700; no mode; the mean is the best choice because it is representative of the entire data set. d. mean= 13,156; median= 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.
Corporate Farms. The U.S. Census Bureau estimates the mean value of the land and buildings per corporate farm. Those estimates are published in the Census of Agriculture. Suppose that an estimate, x, is obtained and that the margin of error is $1000. Does this result imply that the true mean, μ, is within $1000 of the estimate? Explain your answer.
What provides a measure of the variance caused by random, unsystematic differences? a. the error term b. the F ratio c. MS d. SStotal
The average income in a state was $64 comma 64,000 per person per year. Suppose the standard deviation is $29 comma 29,000 and the distribution is right-skewed. Suppose we take a random sample of 100 residents of the state. Complete parts (a) and (b) below. a. What value should we expect for the sample mean? Why? b. What is the standard error for the sample mean?
Marc takes a random sample of 14 dogs from the local animal shelter and weighs them. He obtains the following data: 9 25 32 40 41 45 47 50 53 53 62 79 94 106 What is the median for this data?
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At their inauguration, the ages of the first six (out of a current number of 45) presidents of a certain country were 60, 51, 50, 58, 51, and 55 . Complete parts a and b below. a. Find the mean age at inauguration of the first six presidents. The mean is 54.254.2. (Round to the nearest tenth as needed.) The mean of the most recent six presidents was 51.6. Did the first six presidents tend to be a bit older or a bit younger than the most recent six presidents? older Your answer is correct. younger b. Find the standard deviation of the ages at inauguration of the first six presidents. The standard deviation is nothing. (Round to the nearest tenth as needed.)

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When estimating the mean age of a population of 5000 individuals, a simple random sample of 50 subjects is selected. Should the correction factor for a finite population be used in calculating the standard error of the mean? a. Does not apply b. No c. Yes d. Maybe