Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Answer: A
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.People with higher incomes tend to live longer than those with lower incomes.
A. Positive correlation; coincidence B. Negative correlation; common underlying cause C. Positive correlation; direct cause D. Positive correlation; common underlying cause
Solve the problem.If n(A) = 40, n(B) = 117 and n(A ? B) = 137, what do you know about n(A ? B)?
A. n(A ? B) = 20 B. 60 C. n(A ? B) = 10 D. n(A ? B) = 22
At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are indicated. Round to the nearest whole percent.Less than 15.2 seconds
A. 16% B. 50% C. 34% D. 68%
Solve.Find the missing measurement in the figure below.
a = 0.89 b = 0.1 cm c = 1 cm
A. z = 0.11 cm B. z = 1.79 cm C. z = 0.01 cm D. z = 0.21 cm