1. The percentage of tested patients with disease who actually tested positive is called:
a. Specificity
b. Negative predictive value
c. Sensitivity
d. Positive predictive value
2.
The percentage of patients with a negative test who actually do NOT have the disease is called:
a. Negative predictive value
b. Sensitivity
c. Specificity
d. Positive predictive value
3. The percentage of tested patients without disease who actually tested negative is called:
a. Negative predictive value
b. Specificity
c. Sensitivity
d. Positive predictive value
4. In simultaneous testing, there is a:
a. a net gain in sensitivity and a net gain in
specificity.
b. net gain in sensitivity and a net loss in specificity.
c. a net loss in sensitivity and a net loss in specificity.
d. a net loss in sensitivity and a net gain in specificity.
5. The percentage of patients with a positive test who actually have the disease is called:
a. Specificity
b. Negative predictive value
c. Positive predictive value
d. Sensitivity
6. Which of the following can impact a predictive value?
a. Sensitivity if the disease is rare
b. Incidence
c. Whether the disease is treatable
d. Prevalence
7. The ability of a test to determine who does and who does not have disease is measured by
a. Positive predictive value
b. Sensitivity and specificity
c. Predictive values
d, Sensitivity
8. In sequential testing, there is a:
a. net gain in sensitivity and a net loss in specificity.
b. net gain in sensitivity and a net gain in specificity.
c. net loss in sensitivity and a net gain in specificity.
d. net loss in sensitivity and a net loss in specificity.
9. In sequential testing, a person with a negative test is given a second test.
a. True
b. False
10. A Kappa statistic of 0.55 indicates
a. High Intrasubject variability (low agreement)
b. High interobserver variability (low agreement)
c. Medium interobserver variability (medium agreement)
d. Low intraobserver variability (high agreement)
In: Nursing
Which bond will most likely experience the greatest percentage change in price if the market discount rates for all three bonds increase by 100 basis points?
The following information relates to Questions 17-19
|
Bond |
Coupon Rate |
Time-to-Maturity |
Time-to-Maturity |
Spot Rates |
|
|
X |
8% |
3 years |
1 year |
8% |
|
|
Y |
7% |
3 years |
2 years |
9% |
|
|
Z |
6% |
3 years |
3 years |
10% |
All three bonds pay interest annually.
In: Finance
What does a strong equity ratio indicate?
A. A high percentage of total assets are financed by liabilities or debt as opposed to shareholders or owner’s equity.
B. A company has a strong cash position.
C. A high percentage of total assets are financed by shareholders or owner’s equity as opposed to liabilities or debt.
D. Investors are willing to pay a higher share price for every dollar in earnings per share.
In: Accounting
In: Economics
A bond has a duration of seven years and a yield to maturity of 7.5 percent. If the yield to maturity changes to 12 percent, what should be the percentage price change of the bond?
In: Finance
1. The pharmacist adds 12.5 grams of dextrose to 50ml of water. What percentage of dextrose is this solution?
2. Your order reads give 3000ml of NS over 24 hours. You will use at 20gtt set. How many gtt per minute will run? Round to nears whole number.
3. You have an order for 60ml per hour of drug X. You have 60 gtt set available. How many gtt/min will run?
In: Nursing
The following table lists the cross elasticity of demand for several goods, where the percentage quantity change is measured for the first good of the pair, and the percentage price change is measured for the second good.
Good Cross elasticity of demand
Air-conditioning units and kilowatts of electricity -0.34
Coke and Pepsi 0.63
High-fuel-consuming SUVs and gasoline -0.28
McDonald’s burgers and Harvey burgers 0.82
Butter and Margarine 1.54
1.Explain the sign of each of the cross elasticities. What does it imply about relationship between the two goods in questions.
2. Compare the absolute value of the cross elasticities and explain their magnitudes. For example, why is the cross elasticity of demand of McDonald’s burgers and Harvey’s burgers less than cross elasticity of butter and margarine?
3. Use the information in the table to calculate how a 5% increase in the price of Pepsi affects the quantity of Coke demanded.
4. Use the information in the table to calculate how a 10% decrease in the price of gasoline affects the quantity of SUVs demanded
In: Economics
if your z- score is 1.645, what percentage of scores
is above your value?
a 68
b 5
c 97.5
d 95
e 2.5
In: Economics
1.Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n = 6 professional basketball players gave the following information.
x
64
64
88
66
64
72
y
38
45
50
45
45
41
Given that ∑x = 418, ∑y = 264, ∑x2 = 29,572, ∑y2 = 11,700, ∑xy = 18,514, and r = 0.627, find the critical value for a test using a 2.5% level of significance claiming that ρ is greater than zero.
Select one:
a. 6.869
b. 4.604
c. 0.741
d. 0.727
e. 2.776
2.Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n = 6 professional basketball players gave the following information.
x
63
79
70
80
84
87
y
46
49
45
55
57
58
Find Se.
Select one:
a. 2.302
b. 2.819
c. 1.994
d. 2.522
e. 2.131
3.Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n = 6 professional basketball players gave the following information.
x
87
88
70
84
78
76
y
53
57
50
51
46
50
Given that Se ≈ 3.054, a ≈ 16.547, b ≈ 0.425, and x bar ≈ 80.5 , find the predicted percentage y^ of successful field goals for a player with x = 73% successful free throws.
Select one:
a. 5.1%
b. 31.0%
c. 14.5%
d. 28.0%
e. 47.6%
In: Statistics and Probability
A professional basketball player makes 88% of the free throws he tries. Assuming this percentage will hold true for future attempts, find the probability that in the next 8 tries, the number of free throws he will make is exactly 8.
Round your answer to four decimal places.
P (exactly 8)= ???
In: Statistics and Probability