What is 18 times 40 to the 9th power
2 answers:
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Answer:
Step-by-step explanation:
1) 4(2a+p)=c+p+a
2) Expand: 8a+4p=c+p+a
3) subract a and 4p: 7a=c-3p
4) Divide: a=
<u>Given</u>:
Probability of student smoke,
P = 27.7%
= 0.277
Number of students,
n = 632
(i)
Here,
Number of students (n) = 60
then,
⇒
⇒
We can see that and
so the normal approximation condition are met.
Now,
Now,
⇒
The Z-score is:
=
=
hence,
The probability will be:
⇒
or,
⇒
(ii)
Here,
Number of students (n) = 75
Now,
⇒
The Z-score is:
=
=
then,
hence,
The probability will be:
⇒
Learn more about probability here: