The Excel function =40*RAND() would generate random numbers with standard deviation approximately equal to
A)13.33.
B)20.00.
C)11.55.
D)19.27.

Question

Quizplus · Accepted Answer

The standard deviation of a set of random numbers generated by the RAND() function is approximately equal to 1/sqrt(12), which is around 0.289. Multiplying this by 40 (the coefficient in the function) gives a standard deviation of approximately 11.55. Therefore, the correct answer is C.

The Excel Function =40*RAND() Would Generate Random Numbers with Standard