Answer:
Option D (APEX)
Step-by-step explanation:
L= Student has lice
NL= Student has no lice
PT=Test Shows positive
NT=Test Shows negative
P(
) =0.7708 (Probability that a student has no lice and the test shows negative)
P(
) = 0.0108 ( Probability that a student has lice and the test shows negative)
= ![\frac{P\frac{NT}{NL} }{P\frac{NT}{NL} +P\frac{NT}{L} }](https://tex.z-dn.net/?f=%5Cfrac%7BP%5Cfrac%7BNT%7D%7BNL%7D%20%7D%7BP%5Cfrac%7BNT%7D%7BNL%7D%20%2BP%5Cfrac%7BNT%7D%7BL%7D%20%7D)
![\frac{0.7708}{0.7708+00108}](https://tex.z-dn.net/?f=%5Cfrac%7B0.7708%7D%7B0.7708%2B00108%7D)
![\frac{0.7708}{0.7816}](https://tex.z-dn.net/?f=%5Cfrac%7B0.7708%7D%7B0.7816%7D)
- 0.98618219 (Simplify)
<u> Terms Of Percentages</u>
0.98618219 × 100
=98.6
Therefore your answer is 98.6% (Option D)
APEX
The pattern goes +1; +2; +3; +4; +5; +6... Since it ends at +6, the next you need to do is +7. 24 + 7 is 31 and that will come next.
Numbers after 31:
39
48
58
69
81
94
108
.
.
.
12.99+ 3.75x= total. therefore, 12.99+3.75(4)= 27.99
Answer:
15×4=60 and 3 people will be left without a group of 4