A sociologist sampled 1800 people who work in computer-related jobs and found that 30% of them have changed jobs in the last 6 months. We are interested in the proportion who have changed jobs. a) What parameter are we estimating? Select an answer ✓ b) What is the point estimate of that parameter? Select an answer c) What is a success for this problem? Select an answer

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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A sociologist sampled 1800 people who work in computer-related jobs and found that 30% of them have
changed jobs in the last 6 months. We are interested in the proportion who have changed jobs.
a) What parameter are we estimating? Select an answer
b) What is the point estimate of that parameter? Select an answer
c) What is a success for this problem? Select an answer
d) How many successes were there?
e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this.
f) Round to the fourth.
We are 90% confident that the true proportion of those who work in computer related jobs and have
changed jobs in the last 6 months is between
and
Transcribed Image Text:A sociologist sampled 1800 people who work in computer-related jobs and found that 30% of them have changed jobs in the last 6 months. We are interested in the proportion who have changed jobs. a) What parameter are we estimating? Select an answer b) What is the point estimate of that parameter? Select an answer c) What is a success for this problem? Select an answer d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. f) Round to the fourth. We are 90% confident that the true proportion of those who work in computer related jobs and have changed jobs in the last 6 months is between and
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