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What is the probability of randomly selecting a three-children family with exactly two girs?
Mozzie62
It is 3/8.
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∙ 10y ago
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What is the probability of randomly selecting a four-child family with exactly two boy children?
2/4
What is the probability of selcting two s's if the first card is not replaced before selcting the second card?
There are no s's in a standard deck of cards, so the probability of selecting any s's, in any sequence of draws, in any strategy of replacement is exactly zero.
What is the probability that 4 randomly selected people all have different birthdays?
Let us assume that there are exactly 365 days in a year and that birthdays are uniformly randomly distributed across those days. First, what is the probability that 2 randomly selected people have different birthdays? The second person's birthday can be any day except the first person's, so the probability is 364/365. What is the probability that 3 people will all have different birthdays? We already know that there is a 364/365 chance that the first two will have different birthdays. The third person must have a birthday that is different from the first two: the probability of this happening is 363/365. We need to multiply the probabilities since the events are independent; the answer for 3 people is thus 364/365 × 363/365. You should now be able to solve it for 4 people.
If 3 fair coins are tossed what is the probability of getting exactly 2 tails?
The probability is 3/8 = 0.375
What is the probability of randomly selecting a three-child family with exactly two girl children?
2/6 is not accurate. using a theoretical method for equally likely outcomes, there are 2 possible outcomes for each birth: either a boy(B), or a girl (G). For a family of three children, the total number of possibilities (birth orders) is 2*2*2=8 to double check this work, here are the eight possible outcomes:BBB, BBG, BGG, GBB, GBG, GGB, and GGG. You want EXACTLY two girls, this assumes that the other must be a boy. Therefore, the probability that a three child family has 2 girls one boy is P(2 girls)=3/8=0.375
What is the probability of randomly selecting a four-child family with exactly two boy children?
2/4
What is the pobability of randomly selecting a month with 31 days?
The probability is 7:12... There are five months with less than 31 days, so the probability of selecting a month with exactly 31 days is 7 out of 12.
What is the probability that in a randomly selected sample of 6 people exactly 4 of them are 65 approximately 0.2?
The answer would depend on the demographics of the population: a probability of 0.2 it too high unless the population is from a retirement area.
What is the probability of getting exactly 7 out of 12 multiple choice questions right if a student randomly guesses one of the five possible choices for each question?
It is 0.0033
What is the probability of selcting two s's if the first card is not replaced before selcting the second card?
There are no s's in a standard deck of cards, so the probability of selecting any s's, in any sequence of draws, in any strategy of replacement is exactly zero.
What is the probability that a randomly chosen company report positive profits of 63 percent?
The probability is close to 0. You would need to know details of all the companies in the world that filed reports. Chances of finding one whose profits were exactly 63% are pretty slim!
What is the probability that exactly four vehicles will pass the nct test if a recent study reveals that 80 percent of all vehicles passed the nct test a random sample of 6 vehicles is selected?
The probability that exactly 4 out of 6 randomly selected vehicles will pass the test when the pass rate is 80% is approx 0.2458 (or nearly a quarter).
What is the probability that 4 randomly selected people all have different birthdays?
Let us assume that there are exactly 365 days in a year and that birthdays are uniformly randomly distributed across those days. First, what is the probability that 2 randomly selected people have different birthdays? The second person's birthday can be any day except the first person's, so the probability is 364/365. What is the probability that 3 people will all have different birthdays? We already know that there is a 364/365 chance that the first two will have different birthdays. The third person must have a birthday that is different from the first two: the probability of this happening is 363/365. We need to multiply the probabilities since the events are independent; the answer for 3 people is thus 364/365 × 363/365. You should now be able to solve it for 4 people.
What is the probability that the 6 child family has exactly two girls?
The probability is 2 - 6
What is the probability of getting exactly 2 heads by flipping 3 coins?
The probability is 0.375
From past experience it has been established that 70 percent of the students who take a course in statistics at QCC pass the course If you randomly select 6 students who took a course at QCC what is t?
what is the probability that exactly 3 students passed the course?
What is the probability of tossing exactly 3 tails?
.125
