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You have no failures (all observations are right-censored) and the preference Weibayes Only for Zero Failure Data is checked. Then the Weibayes report appears. See Weibayes Example for Data with No Failures.
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Select Likelihood as the Confidence Interval Method.
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Click OK.
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Type 1.5 as the known Weibull β value.
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Click Update.
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Figure 2.18 Life Distribution Report for Zero Failures
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Select Likelihood as the Confidence Interval Method.
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Click OK.
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Select the Weibull distribution in the Compare Distributions plot.
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Select Fix Parameter from the Parametric Estimate - Weibull red triangle menu.
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Type 1.5 as the known Weibull β value.
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Click Update.
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Place your cursor over the top of the Y axis. The cursor becomes a hand. Drag the axis downward until it reaches 0.5 as the top number.
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Figure 2.19 Life Distribution Report for One Failure