2024 Wgu C784 - Applied Healthcare Statistics Pre-Assessment Exam With Correct Answers

2024 WGU C784 - APPLIED
HEALTHCARE STATISTICS PRE-
ASSESSMENT EXAM WITH
CORRECT ANSWERS

Given the following set of numbers: 3.3, -2.3, -16, 25. What are the square
roots of the whole number?
A. +/- 2.3
B. +/- 3.3
C. +/- 4
D. +/- 5 - CORRECT-ANSWERSD. +/- 5


Question #63: Studies show that people who live in very cold climates have
a 30% chance of getting influenza and a 15% chance of getting appendicitis
during the winter. What is the probability a person has both diagnoses,
rounded to the nearest percent?
A. 5%
B. 15%
C. 30%
D. 45% - CORRECT-ANSWERSA. 5%

Question #64: As part of an exercise regimen, the probability of a person
running outside is .45, the probability of a person joining a gym is .4, and the
probability of a person both running outside and joining a gym is .25. What is
the probability that a person either runs or joins a gym?
A. .6
B. .65
C. .7
D. .85 - CORRECT-ANSWERSA. .6

Question #65: A specialist saw 27 patients and made the following
diagnoses:Seven had type 2 diabetes. Nine had coronary heart disease.
Three had both type 2 diabetes and coronary heart disease. How is the
probability of a patient being diagnosed with type 2 diabetes or coronary
heart disease calculated?
A. 7/27 + 9/27 - 3/27
B. 7/27 - 9/27 - 3/27
C. 1 - (7/27 + 9/27 - 3/27)
D. 1 - (7/27 - 9/27 - 3/27) - CORRECT-ANSWERSA. 7/27 + 9/27 - 3/27

, Question #66: A rural community clinic sees eight patients per hour. The
probability that a patient is diagnosed with high blood pressure is 0.63. The
patients are assumed to be diagnosed independently of other patients. What
is the probability that none of the patients will be diagnosed with high blood
pressure?
A. .37 to the power of 8 (.37 times itself 8 times)
B. .63 to the power of 8 (.63 times itself 8 times)
C. 1 — (.37) to the power of 8 (1 - (.37) times itself 8 times))
D. 1 — (.63) to the power of 8 (1 - (.63) times itself 8 times)) - CORRECT-
ANSWERSA. .37 to the power of 8 (.37 times itself 8 times)

Question #67: A county has 625 group physician practices that provide the
following services:
300 provide primary care services
225 provide specialty care services
100 provide both primary care services and specialty care services
How is the probability of a physician group practice providing primary care
services or specialty care services calculated?
A. 300/625 + 225/625 - 100/625
B. 300/625 + 225/625 + 100/625
C. 1 - (300/625 + 225/625 - 100/625
D. 1 - ( 300/625 + 225/625 + 100/625) - CORRECT-ANSWERSA. 300/625 +
225/625 - 100/625

Question #68: A hospital's financial reimbursement payor mix indicates 35%
of the patients have Medicare and 15% have Medicaid. Of those who have
Medicare, there is a 10% chance they also have Medicaid. What is the
probability that a hospital patient has both Medicare and Medicaid?
A. .005
B. .015
C. .035
D. .5 - CORRECT-ANSWERSC. .035

Question #69: 14% of people will contract Virus A over the course of their
life, and 18% contract Virus B. 10.62% of people will contract both viruses.
What is the probability, to the nearest percent, that a person who contacts
Virus B will also contract Virus A?
A. 11%
B. 21%
C. 59%
D. 76% - CORRECT-ANSWERSC. 59%

Question #70: A medical center treated many patients with a given illness.
Of those patients, 37% had a sore throat, and 36% had itchy eyes. Moreover,