Solve the problem.Patients at a medical clinic have a wait time modeled by 
for 
where the random variable x is in minutes. Find the mean, the variance, and the standard deviation.
A. ? = 6, ?2 = 36, ? ? 6
B. ? = 6, ?2 = 72, ? ? 6
C. ? = 12, ?2 = 36, ? ? 6
D. ? = 12, ?2 = 72, ? ? 6
Answer: D
You might also like to view...
A balloon that originally holds 13.6 cubic inches of air springs a leak. Let 
represent the volume, in cubic inches, of air in the balloon t minutes after the balloon starts to leak air. The average rate of change of V is -1.02 cubic inches per minute. Use these facts to estimate 
variablename="impvar_98b68c9b1eb64411bff2363d2" />. ? A. 13.6 cubic inches B. 23.80 cubic inches C. 11.57 cubic inches D. none of the above
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Write the decimal number that has the specified place values.4 tens, 1 ten-thousands, 5 hundredths, 4 ones, 4 ten-thousandths
A. 1044.0504 B. 10,044.0504 C. 10,044.054 D. 40,044.0501
Decide whether the problem is an equation or an expression.
= 
- 6
A. Equation B. Expression