WGU C784 - Applied Healthcare Statistics Pre-Assessment
What is the Celsius equivalent for a patient who is running a fever of 102 degrees Fahrenheit? A. 37.9°C B. 38.9°C C. 39.9°C D. 40.9°C
38.9°C
Question #60: A box contains one red ball, one purple ball, and one blue ball. Two balls are drawn from the box one after the other without replacing the first ball. What is the probability of drawing a red ball second? A. .33 B. .5 C. .67 D. .83
A. .33
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))
A. .37 to the power of 8 (.37 times itself 8 times)
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
A. .6
What is 3/14 - 1/7? A. 1/14 B. 2/7 C. 5/14 D. 3/2
A. 1/14
What is 2/3 + 1/4? A. 11/12 B. 3/12 C. 3/7 D. 8/3
A. 11/12
Question #21: Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days, and the standard deviation is 61 days. Which percent of batteries have lifetimes longer than 561 days? A. 16 B. 21 C. 26 D. 31
A. 16
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, 51% of patients who had itchy eyes also had a sore throat. What is the probability that a patient had both a sore throat and itchy eyes? A. 18.36% B. 18.87% C. 54.64% D. 97.30%
A. 18.36%
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)
A. 300/625 + 225/625 - 100/625
What is the value of x in this equation? 2x + 3 = 13 A. 5 B. 10 C. 76 D. 106
A. 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%
A. 5%
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)
A. 7/27 + 9/27 - 3/27
Question # 35: A study was conducted on the possible relationship between gender and whether or not they exercise. Which type of classification is this? A. Categorical to categorical B. Categorical to quantitative C. Quantitative to quantitative D. Quantitative to categorical
A. Categorical to categorical
Question #42: A researcher found the following results when studying the number of patients who survived surgery at two different hospitals. Hospital A Hospital B Died 3% 2% Survived 97% 98% What is true about the relationship between the survival rate and the hospital? A. Hospital B has a higher survival rate because 98% is higher than 97%. B. Hospital A has a higher survival rate because 3% is higher than 2%. C. Hospital B has a higher survival rate because 98% is higher than 2%. D. Hospital A has a higher survival rate because 97% is higher than 3%.
A. Hospital B has a higher survival rate because 98% is higher than 97%.
Question # 30: The following heart rates were recorded for patients in an intensive care unit: 98, 88, 74, 83, 76, 99, 81, 73, 60, 66, 88, 94, 73, 82, 95, 85, 76. Which method of display is appropriate to see the exact values of individual observations? A. Stem plot B. Pie chart C. Bar chart D. Histogram
A. Stem plot
Question #58: Researchers surveyed 100 patients on their preferred procedure. Their preferences include the following: 35 - Infusions 30 - Incision/drainage 25 - Wound care 10 - Vital signs What is the relative frequency for patients choosing wound care as their preferred procedure? A. .1 D. .25 C. .3 D. .35
B. .25
Question #55: A pediatric practice has six physicians, four of which are male. A newborn patient is assigned to a physician randomly. What is the probability that the baby will be assigned to a physician that is not male? A. .17 B. .33 C. .5 D. .67
B. .33
Question #59: A street performer is planning to flip a coin three times. Assume that the coin landing heads up or landing tails up is equally likely. What is the probability of the coin landing heads up exactly two times? A. .25 B. .375 C. .5 D. .875
B. .375
Question # 25: An intensive care unit patient has frequent systolic blood pressure measures represented in the following data set: 140, 150, 154, 154, 170, 176, 180. What is the mode? A. 140 B. 154 C. 160.57 D. 170
B. 154
A patient's protein intake for today has been 15.76g, 8.49g, and 22.58g. What is the total protein intake rounded to the nearest tenth of a decimal? A. 46.5g B. 46.8g C. 46.9g D. 47g
B. 46.8g
Given the following expression: 5 x (30 - 27)2 + 4. What is the correct answer using the proper order of operations? A. 34 B. 49 C. 65 D. 81
B. 49
Question #22: Five hundred values are normally distributed with a mean of 125 and a standard deviation of 10. Which percent of the values lies between the interval 115-135? A. 50 B. 68 C. 95 D. 99
B. 68
Question #38: A study is conducted to determine the most common blood pressure readings among sleep apnea patients who use a continuous positive airway pressure machine and those who do not. Which numerical measure is appropriate? A. Regression analysis B. Five-number summary C. Correlation coefficient D. Conditional percentages
B. Five-number summary
Question #24: A survey asked residents to rate their community hospital on a scale of 1 to 10, with 10 being the most happy with the hospital services. The data shows a positively skewed distribution. How are the mean, median and mode related? A. Mean < Median < Mode B. Mode < Median < Mean C. Mean < Mode < Median D. Median < Mode < Mean
B. Mode < Median < Mean
Question # 29: The following weights were recorded for children in a pediatrician's office: 93, 84, 70, 48, 59, 66, 88, 94, 84, 67, 74, 58, 82. The analyst wants to see the distribution of the weights, but still be able to see the individual values. Which method of display should be used? A. Box plot B. Stem plot C. Bar chart D. Pie chart
B. Stem plot
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
C. .035
A patient's medication was increased by 40 milligrams. What is the percent increase in the medication if the original medication was 180 milligrams? A. 2.2% B. 4.5% C. 22.2% D. 45%
C. 22.2%
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%
C. 59%
Given the following expression: 4 + 7 × (6 - 3)2. What is the answer using proper order of operations? A. 25 B. 46 C. 67 D. 99
C. 67
What is the Fahrenheit equivalent for a patient's room that needs to be kept at 25 degrees Celsius? A. 70° B. 75° C. 77° D. 80°
C. 77°
Given the following dataset representing hours of overtime worked by nurses in one week: [Nurse A] 3 [Nurse B] 7 [Nurse C] 2 [Nurse D] 4 What should be used to display the data? A. Box plot B. Stem plot C. Bar chart D. Histogram
C. Bar chart
Question #40: A study is conducted on the possible relationship between blood pressure and hemoglobin A1c. Which numerical measure is appropriate? A. Standard deviation B. Five-number summary C. Correlation coefficient D. Conditional percentages
C. Correlation coefficient
Question #61: Three women are pregnant with one child each. What are the possible outcomes for the babies' sex, assigned as either male (M) or female (F)? A. MMM, MFM, FMF, FFF B. MMM, MMF, FFM, FFF C. MMM, MMF, MFM, MFF, FMM, FMF, FFM, FFF D. MMM, MMF, MFM, MFF, FMM, FFM, FFF, FMM
C. MMM, MMF, MFM, MFF, FMM, FMF, FFM, FFF
Question #43: A researcher studied patients' preferences for physician attire based on setting. Physician's Office Emergency Room Casual and white coat 17% 10% Formal and white coat 67% 24% Scrubs 7% 65% Business suit 9% 1% What is true about the preferred attire for physicians in an office? A. Patients prefer their physician to wear scrubs instead of casual clothes and a white coat because 65% is greater than 17%. B. Patients do not prefer their physician to wear scrubs instead of casual clothes and a white coat because 7% is less than 9%. C. Patients prefer their physician to wear formal clothes and a white coat instead of casual clothes and a white coat because 67% is greater than 17%. D. Patients do not prefer their physician to wear scrubs instead of formal clothes and a white coat because 65% is less than 67%.
C. Patients prefer their physician to wear formal clothes and a white coat instead of casual clothes and a white coat because 67% is greater than 17%.
Question #50: In a recent trial, a researcher concluded that the more calories a person consumes, the more likely they are to have a high BMI. What kind of relationship is this? A. Positive causation B. Negative causation C. Positive association D. Negative association
C. Postitive association
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
D. +/- 5
Given the equation: (.5475 - .3025) x .15. What is the solution rounded to the nearest thousandth? A. .03675 B. .0368 C. .368 D. .037
D. .037
Question #57: A fair coin is flipped. What is the likelihood of the coin landing on heads if it is flipped again? A. .17 B. .2 C. .25 D. .5
D. .5
What is the greatest common factor of 132 and the square root of 121 using prime factorization? A. 1 B. 2 C. 10 D. 11
D. 11
What is the greatest common factor of 24 and 84 using prime factorization? A. 2 B. 4 C. 8 D. 12
D. 12
Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when adding together only the whole numbers? A. 5.5 B. 11 C. 12.5 D. 15
D. 15
Question #23: A pediatric unit wants to know what the median age is of its adolescent population so they can focus on activities for these clients. The unit staff recorded the ages of 12 adolescents over a three month period: Age(s): Frequency(ies): 13 1 16 2 17 2 18 3 19 4 What is the median age? A. 18.6 B. 17 C. 17.2 D. 18
D. 18
Solve the following equation: x − 5/4 = 2/3. What is the value of x? A. 3/12 B. 7/12 C. 10/12 D. 23/12
D. 23/12
An intravenous drip is infused at a rate of 4.5 milliliters per minute. How many milliliters are infused per hour? A. .075mL B. 2.7mL C. 75mL D. 270mL
D. 270mL
Question # 39: A study is conducted on the possible relationship between gender and patients with or without hypertension. Which numerical measure is appropriate? A. Regression analysis B. Five-number summary C. Correlation coefficient D. Conditional percentages
D. Conditional percentages
Question #36: A study was conducted on the possible relationship between age and diastolic blood pressure. Which type of classification is this? A. Categorical to categorical B. Quantitative to categorical C. Categorical to quantitative D. Quantitative to quantitative
D. Quantitative to quantitative
Question #37: A study was conducted on the possible relationship between a categorical variable and a quantitative variable. Which type of graphical display is appropriate for displaying this relationship? A. Scatterplot B. Two-way table C. Decision table D. Side-by-side box plot
D. Side-by-side box plot
Question #41: A physician collects retrospective data from smoking and nonsmoking patients to determine the relationship between smoking and lung cancer. Results Lung Cancer No Lung Cancer Total Smoker 77% 23% 100% Non-Smoker 22% 78% 100% Which data indicate the relationship between smoking and lung cancer? A. Nonsmokers are less likely to have lung cancer than smokers because 23% is less than 77%. B. Smokers are more likely to have lung cancer than nonsmokers because 23% is greater than 22%. C. Nonsmokers are less likely to have lung cancer than smokers because 78% is greater than 77%. D. Smokers are more likely than nonsmokers to have lung cancer because 77% is greater than 22%.
D. Smokers are more likely than nonsmokers to have lung cancer because 77% is greater than 22%.
Question #62: A physician is reviewing clinical results and finds that the patient has an elevated temperature and a high cholesterol value. On average, patients present with an elevated temperature 20% of the time, a high cholesterol 72% of the time, and the probability of both is 14.4%. What is true about the results? A. The values are related. B. The values are disjoint. C. The values are dependent. D. The values are independent.
D. The values are independent.
