A time study has revealed an average observed time of 4 minutes, with a standard deviation of 1.20 minutes. These figures are based on a sample of 33 cycles. Is this sample large enough for analyst Anand Paul to be 90.0% confident that the standard time is within 5% of the true value? The required sample size is (enter your response rounded up to the nearest whole number). Is the sample large enough? Yes No

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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A time study has revealed an average observed time of 4 minutes, with a standard deviation of 1.20 minutes. These figures are based on a sample of 33 cycles. Is this sample large enough for analyst Anand Paul to be 90.0% confident that the standard time is within 5% of the true value?
The required sample size is (enter your response rounded up to the nearest whole number).
Is the sample large enough?
Yes
No
Transcribed Image Text:A time study has revealed an average observed time of 4 minutes, with a standard deviation of 1.20 minutes. These figures are based on a sample of 33 cycles. Is this sample large enough for analyst Anand Paul to be 90.0% confident that the standard time is within 5% of the true value? The required sample size is (enter your response rounded up to the nearest whole number). Is the sample large enough? Yes No
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