1. ## Urgent help needed please

Hi i have a question which i am struggling on and have exams in two days any kind hearted person pls help with the following

Question 1
In April 2005, 2080 patients attended St Elsewhere hospital for CT Scan head and body examination. Auit data reveals that 680 head examinations were referred from A&E, 350 from Neurological clinics, and 70 from private

a) what % of the body examination were performed in April
b) what % of the patients were referred from A&E for head scans
c) what is the ratio of private patients to patients referred from within the hospital.

Question 2
A patient is positioned supine for an x-ray examination of the lumber spine. Focus to image receptor distance (FFD) is 100cm. The light beam image on the patients skin has a diameter of 9cm. The emerging x-ray beam has an exit diameter of 12cm.
a) what is the thickness of the patient (p)?
b) what is the magnification of the image (M)?

PLEASE ANY ONE HELP ME REGARDS

Hi i have a question which i am struggling on and have exams in two days any kind hearted person pls help with the following

Question 1
In April 2005, 2080 patients attended St Elsewhere hospital for CT Scan head and body examination. Auit data reveals that 680 head examinations were referred from A&E, 350 from Neurological clinics, and 70 from private

a) what % of the body examination were performed in April
b) what % of the patients were referred from A&E for head scans
c) what is the ratio of private patients to patients referred from within the hospital.

Question 2
A patient is positioned supine for an x-ray examination of the lumber spine. Focus to image receptor distance (FFD) is 100cm. The light beam image on the patients skin has a diameter of 9cm. The emerging x-ray beam has an exit diameter of 12cm.
a) what is the thickness of the patient (p)?
b) what is the magnification of the image (M)?

PLEASE ANY ONE HELP ME REGARDS

Looks like among the 2080, there are a total of 680+350+70 people had head exams. Can you answer a)?

In part 2, It is the conditional probability of head exams given that it is referred from A&E. And there are 680 out of (680+350+70).

I am not so sure because of some of the terminologies used in the question, so let's see if someone else has a thought.

#2) Sorry, Same here. Not familiar with the wording.

Good luck!

3. Probably exam is over already but if you haven't solved it here you go:

Question 1
In April 2005, 2080 patients attended St Elsewhere hospital for CT Scan head and body examination. Auit data reveals that 680 head examinations were referred from A&E, 350 from Neurological clinics, and 70 from private
That's the information we're given. You may want to write it down columnally to help you understand it better.

Auit Data:
=======
A&E: 680
Neurological: 350
Private: 70
Total = 1100

a) what % of the body examination were performed in April
Total Patients - Head Patients = Remaining body patients
2080-1100 = 980

We need a percentage. (Per cent meaning every hundred) so we divide the newly discovered body examinations with the total patients and multiply by 100 to acquire a percentage.

980/2080 x 100 = 47.1%

b) what % of the patients were referred from A&E for head scans
Same process. Divide A&E patients by total head examination number and multiply by hundred.

Answer = 61.8% (Use this as a check. Work it out yourself)

c) what is the ratio of private patients to patients referred from within the hospital.
I may have not gotten this one right, but it seems to be comparing the private patients to the non-private patients.

So I'd go by subtracting private patients from total patients and bulding a ration that way.

2080-70 = 2010

70:2010
7:201.

I'm not really sure bout this one though.

Second question I can only blink. That's definitely where I wouldn't like my exams leading to.