It is known that 75 percent of all households in the United States have intermittent Internet connectivity problems. For random samples of 450 independent households in the United States, what are the mean, , and standard deviation, o, of the distribution of the number of households that have intermittent Internet connectivity problems?
A. 4 = 450(0. 25); 0 = 450(0. 25) (0. 75)
B. M = 450(0. 75); 0 = 450(0. 75) (0. 25)
Ku = 450(0. 25) (0.75):0 =
(0.25) 0.75)
450
2 4 = 450(0. 25) (0. 75): 0 = V450(0.25) (0. 75)
1. 4 = 0. 75;0 = / (0.75)(0.25