In the study, the authors state the following Becauseventilator free ...

In the study, the authors state the following: â€œBecause ventilator-free days and days free of multiple...

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In the study, the authors state the following: â€œBecauseventilator-free days and days free of multiple organ dysfunctionsyndromes are known to have a bimodal distribution, the data wereinitially analyzed by means of Studentâ€™s t-test, with between-groupdifferences presented as means and 95% confidence intervals. Asecondary analysis of these outcome measures involving abootstrapped t-test was also conducted to support the results ofthe primary analysisâ€¦â€
Try to Justify the logic of these two sentences.
i. why did they initially use a method based on Studentâ€™s t-testand why did they do a secondary analysis with a â€œbootstrappedt-testâ€. Try to explain briefly what the latter means.
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Answer & Explanation Solved by verified expert

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Before getting into the details of the explanation let us first of try to understand as to why is there a need to have a bootstapped t test Why is bootstapping required bootstrapping is any test that relies on random sampling with replacement resampling It is the practice of estimating properties of an estimator such as its variance by measuring those properties when sampling from an approximating distributionis done For example empirical distribution function but How does it help A Bootstrapped test allows us to assign various measures of accuracy like bias variance confidence intervals etc to See Answer

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