The probability is P = 0.004, so the correct option is D.
<h3 /><h3>How to find the probability?</h3>
We want to find the probability that 4 students lie on these 30% subgroup.
We know that there are 30 students, the 30% of 30 is:
x = (30%/100%)*30 = 9
So 9 out of 30 students prefer the tests to be on Mondays.
The probability that the first randomly selected kid wants the test to be on Monday is:
p= 9/30
For the next kid, the probability is:
p'= 8/29 (because one kid was already selected).
For the next one:
p'' =7/28
For the final one:
p''' =6/27
The joint probability is the product of these 4:
P = (9/30)*(8/29)*(7/28)*(6/27) = 0.004
So the correct option is D.
If you want to learn more about probability:
brainly.com/question/25870256
#SPJ1
In 1981<span>, about $1.1 </span>million was lost due to fires. in 1988, the loss<span> was about $9.6 million - 950063. ... Brainly has millions of high quality answers, </span>all<span> of them carefully moderated by our ... Let's </span>find<span> out, how many </span>percent<span> did it increased. => </span>9.6 million<span> - </span>1.1 million<span> = 8 .5 millions , this amount was the</span>difference<span> => 8.5 million ...</span>
Answer:
18.67 ft
Step-by-step explanation:
|\
| \
| \
h | \ 20 ft
| \
| \
|-- 69° \
---|----------------
For the 69° angle, h is the opposite leg, and 20 ft is the hypotenuse.
sin A = opp/hyp
sin 69° = h/20
h = 20 * sin 69°
h = 18.67
Answer: 18.67 ft
Answer:
x=71
Step-by-step explanation:
(Base angle of an isosceles triangle)
Answer:
2) a trapezoid
Trapezoids have only one pair of parallel sides; parallelograms have two pairs of parallel sides. A trapezoid can never be a parallelogram.
