Statistic –

  
Respond each part with 150 words each in APA format. 
· Ask them a question about the variable they have chosen.
· Ask them about the consequences that could occur were the confidence interval from the sample incorrect in predicting the population mean.
· What options would you suggest they employ to increase the likelihood that the confidence interval contained the true mean of the population?
Part 1
The variable I have chosen this week involves cardiac arrests that happen in the field. When you experience a true emergency you would call 911. Before we (the ambulance) would make it often dispatchers will provide emergency instructions such as CPR. The general motto we use is “time is muscle” so when dispatchers give relevant information it can help save a patients life until we arrive. The article I read pulled numbers from King county in Washington state. The dispatchers were shown over a 6 month period to accurately provide information to 70% of the callers, and they provided 8/154 patients with the incorrect information. They conclude that dispatchers have a 95% confidence interval of providing the correct information. (Clark JJ et al 1994). I believe that this information was gathered really well considering there are so many variables, does the patient have a pulse but isn’t breathing, does the patient have a pulse etc. I believe the only changes that could be made are grouping certain medical emergencies together like shortness of breath, or full code patients.
References
Clark JJ , et al. (1994, May 23). Accuracy of determining cardiac arrest by emergency medical dispatchers. – PubMed – NCBI. Retrieved from https://www.ncbi.nlm.nih.gov/pubmed/8185093
Part 2
The career I have chosen is nursing the best variable to use is hand hygiene and how often its practiced. The sample group for this purpose could be all hospital staff that comes in contact with any patients. This will help us gauge what percent of staff does hand hygiene and what percent can be encouraged to do it more often. We can get a percentile of employees washing and not washing hand so we can get a better read of how many are not washing their hands and improve the scores. The sample could change drastically if there where outside people going in and out and noting that hand hygiene was not being followed.