In Thailand, the ratio bitcoin investors is gradually increased from last year. Last year, the precentage of Thai bitcoiner was 0.003%.In this year, 100000 persons are randomly selected, there are about 2500 persons, they know bitcoin. There are about 250 persons who invest in bitcoin. You are requested to test there is a significant increment in population proportion of bitcoin investor at 98% confidence level.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

35-60 students are taking math.

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.

6e14 is the answer.