Answer:
B) 0.02
Step-by-step explanation:
<u>Use the Binomial Theorem</u>

We have the probability of success,
, and the probability of failure,
. The binomial coefficient,
, represents the amount of possible combinations that
items can be chosen out of
items, with its respective formula
.
Hence, the best choice for the probability that 4 students chosen at random from the class of 30 that want the next test to be on Monday will be option B, 0.02
Calcualate 40% (0.40) times 20 to get that there are 8 boys in the class. The rest must be girls, so 20 - 8 gives you 12 girls. 25% (0.25) times the 8 boys gives you that 2 of the boys wear glasses. 50% (0.5) times the 12 girls tives you that 6 girls wear glasses. Add together the 2 boys and the 6 girls that wear glasses to get that a total of 8 students wear glasses.
Answer:575
Step-by-step explanation: deltamath
Answer:
1 7/8
Step-by-step explanation:
The answer is 1 7/8.
Answer:
1.2
Step-by-step explanation: