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Low-Cost Single-Port LoCoSP Device for a Transcervical Approach in Minimally Invasive Transhiatal Esophagectomy
Published on: September 11, 2021
Abstract:
Switching to LED lighting has, specialist supplier of such technology, Exled maintains, 'proven to be one of the most significant cost-saving activities hospitals can undertake'. Alongside the financial gains, other benefits include higher levels of patient satisfaction with lighting 'quality' and ambience, and improved environmental credentials. Here Exled MD, Michael Renecle, discusses LED lighting in healthcare in some detail, offers useful pointers on specification, examines some of the 'significant savings and environmental improvements' available to those 'making the switch', and considers the positive experiences of a number of NHS Trusts who have done so.
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Testing a Claim about Standard Deviation
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...

