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  3. 75 seconds 1 minute 60 seconds 1 25 therefore the

75 seconds 1 minute 60 seconds 1 25 Therefore the margin of error in minutes...

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75 seconds 1 minute 60 seconds 1 25 Therefore the margin of error in minutes is E 1 25 Confidence Level Step 2 A sample size for 95 confidence is needed Common values for z for various confidence levels are given below a 2 90 95 99 1 25 minutes a a 2 Submit Skip you cannot come back 0 10 0 05 1 645 0 05 0 025 0 01 0 005 za 2 1 960 1 25 minutes 2 576 Za 2 According to the table for a 95 confidence interval the necessary value for is

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