probability stats
The probability that a person catches a cold during flu season is 0.4 assume 10 are chosen at random.
What is the probability that exactly four will catch a cold?
A) 0.6330
B) 0.5020
C) 0.2420
D) 0.2508
What is the probability that four or more will catch a cold?
A) 0.715
B) 0.618
C) 0.546
D) 0.312
What is the standard deviation for the number of people catching a cold?
A) 1.549
B) 1.345
C)1.265
D) 2.400
I’ve been going over the chapter continuously but this section isn’t clicking at all.
