Determine that the events are mutually exclusive or not, Applied Statistics

In a study of outcomes for patients who had been in the Intensive care Unit (ICU) at a large hospital, the records from last 150 patients who had been in the ICU for more than one day are obtained. The data for the number of patients in four categories is summarized in the table below.

2431_Determine That The Events Are Mutually Exclusive or Not.png

So of the 150 patients, 120 were diagnosed with Coronary Heart Disease (CHD), 52 had both CHD and stroke, 68 had CHD but not stroke, etc. A patient record is selected at random. Let A be the event that the record is for an ICU patient who had CHD, and B be the event that the record is for a patient who had a stroke.

a) i) Are the events A and B independent? Explain.

ii) Are the events A and B mutually exclusive? Explain.

iii) Find P (AB).

iv) Find P (A υB).

b) For a detailed chart review, 50 of the 150 records are selected at random without replacement.

i) Find the probability that the sample contains 45 patients with CHD. (An expression is OK here, but tries to do the calculation).

ii) Find the probability that the sample contains more than 45 patients with CHD or stroke. (An expression is OK here, but tries to do the calculation).

 

 

 

Posted Date: 3/30/2013 5:16:58 AM | Location : United States







Related Discussions:- Determine that the events are mutually exclusive or not, Assignment Help, Ask Question on Determine that the events are mutually exclusive or not, Get Answer, Expert's Help, Determine that the events are mutually exclusive or not Discussions

Write discussion on Determine that the events are mutually exclusive or not
Your posts are moderated
Related Questions
For the circuit shown below; Write a KCL equation for Node A, Node B, Node C and Node D. Write a KVL equation for Loop 1, Loop 2 and Loop 3.   A simple circ

Sampling Error  It is the difference between the value of the actual population parameter and the sample statistic. Samples are used to arrive at conclusions regarding the p

Primary and Secondary Data: Primary Data: These data are those are collected for the first time. Thus primary data are original in character and gathered   by actual observat

Mean Absolute Deviation To avoid the problem of positive and negative deviations canceling out each other, we can use the Mean Absolute Deviation which is given by


Where do I Access the gss04student_corrected dataset

Arithmetic Average or Mean The arithmetic mean is the most widely and the most generally understandable of all the averages. This is clear from the reason that when the term

Advantages By definition, mode is the most typical or representative value of a distribution. Hence, when we talk of modal wage, modal size of shoe or modal size of family i

Meaning of Interpolation and Extrapolation Interpolation is a method of estimating the most probable  missing figure on  the basis of given data under certain assumptions. On t

Statistics Can Lead to Errors The use of statistics can often lead to wrong conclusions or wrong estimates. For example, we may want to find out the average savings by i