A recent poll of 700 people who work indoors found that 280 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a sample is necessary? O A. 1305 O B. 532 O C. 1064 O D. 33

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 recent poll of 700 people who work indoors found that 280 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how
large a sample is necessary?
А. 1305
В. 532
О С. 1064
O D. 33
Transcribed Image Text:A recent poll of 700 people who work indoors found that 280 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a sample is necessary? А. 1305 В. 532 О С. 1064 O D. 33
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