Question 8 A research firm wants to estimate, within 3 percent, the proportion of junior executives leaving large manufacturing companies within three years with a 95 % level of confidence. A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21. To update this study, the how many junior executives should be included in the study? O 709 O 612 O 549 O 502 O 897

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question
9
Choose a FALSE statement.
O The Central Limit Theorem proves that the sampling distribution of sample means tends to approximate a normal distribution when the
sample size is reasonably large.
O A 95 percent confidence interval states that 95 percent of the sample means of a specified sample size selected from a population will lie
within plus and minus 1.96 standard deviations of the hypothesized population mean.
O If a population follows normal distribution, the distribution of sample means follows t distribution.
O A point estimate is a single value used to estimate a population parameter.
O We can expect some difference between sample statistics and the corresponding population parameters. This difference is called the
sampling error.
Question 8
A research firm wants to estimate, within 3 percent, the proportion of junior executives leaving large manufacturing companies
within three years with a 95 % level of confidence. A study conducted several years ago revealed that the percent of junior
executives leaving within three years was 21. To update this study, the how many junior executives should be included in the
study?
O 709
O 612
O 549
O 502
O 897
Transcribed Image Text:Choose a FALSE statement. O The Central Limit Theorem proves that the sampling distribution of sample means tends to approximate a normal distribution when the sample size is reasonably large. O A 95 percent confidence interval states that 95 percent of the sample means of a specified sample size selected from a population will lie within plus and minus 1.96 standard deviations of the hypothesized population mean. O If a population follows normal distribution, the distribution of sample means follows t distribution. O A point estimate is a single value used to estimate a population parameter. O We can expect some difference between sample statistics and the corresponding population parameters. This difference is called the sampling error. Question 8 A research firm wants to estimate, within 3 percent, the proportion of junior executives leaving large manufacturing companies within three years with a 95 % level of confidence. A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21. To update this study, the how many junior executives should be included in the study? O 709 O 612 O 549 O 502 O 897
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