Answer:
0.1147
Step-by-step explanation:
When adults with smartphones are randomly selected, 61% use them in meetings or classes, then
- the probability of using the smartphone is
- the probability of not using the smartphone is

If 8 adult smartphone users are randomly selected, the probability that exactly 3 of them use their smartphones in meetings or classes can be calculated using binomial distribution as

Note that

then the probabilty is

Answer:
a
Step-by-step explanation:
it's a because it would be ×2
Let a, b, c represent the numbers of subscribers who watched 1, 2, and 3 videos, respectively.
.. a +b +c = 312 . . . . . . . there are 312 subscribers, total
.. a +2b +3c = 740 . . . . there were 740 total views
Subtract double the first equation from the second.
.. (a +2b +3c) -2(a +b +c) = (740) -2(312)
.. c -a = 740 -624 = 116
116 more people watched all three videos than watched one video.
Answer:
The correct answer is B
Step-by-step explanation:
I know this is the answer because I took the test and got it right.
F + g = 23
f+g-g=23-g
f = 23-g
f + 2g =34
23-g+2g=34
23+g=34
23-23+g=34-23
g = 11
f + g = 23
f + 11 = 23
f +11-11 =23-11
f = 12
Check
f + 2g =34
12 + 2(11) =34
12 + 22 = 34
34=34
She made 11 free throws and 12 field goals