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Suppose that a survival time follows an exponential distribution with parameter lambda with 12 uncensored data and 3 right censored data. For the survival times

Suppose that a survival time follows an exponential distribution with parameter lambda with 12 uncensored data and 3 right censored data.

For the survival times the uncensored data are

1148,467,164,263,165, 218, 230, 538, 670, 917, 1678,639

calculate the maximum likelihood estimate (MLE) of lambda and the 95% confidence interval of lambda

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