Answer:
0.070
Step-by-step explanation:
Y = number on trial
Y has a negative binomial distribution
r = 3
P = 30% = 0.3 probability of positive indication.
P(Y = 11) probability of 11 employees that must be tested to get 3 positives
Y-1Cr-1*p^r*q^(y-r)
Y-1 = 11-1 = 10
r-1 = 3 -1 = 2
10C2 x 0.3³x0.7⁸
45x0.027x0.05764801
= 0.070
This is the probability that 11 employees must be tested to get 3 positives.
Answer:
The area is 225 and they are not directly proportional
Step-by-step explanation:
find the area by doing 15 x 15 which is 225
Hi! To find the surface area of a cylinder, you need to find the surface area of the base, and then the surface area of the rectangular prism that "wraps around" the cylinder.
The area of a circle: A=pi*r^2
A=3.14*3.7^2
A≈43.00
Multiply this by 2 because there are 2 circles
Combined Area of Circles = 86
Circumference of a circle = C=2pi*r (this is for the width of the rectangle)
C=2(3.14)(3.7)
C=23.236
C=W
W=23.236
W*L=A
23.236 * 7.1=A
A≈165
Now lets add them together!
86cm^2+165cm^2= 251 cm squared
Total number of members = 12
Members to choose at a time = 2
This is a combination problem and we are to find the combination of 12 objects taken 2 at a time i.e. we are to find 12C2
12C2 = 66
So, there are 66 ways of selecting a president and vice president.
Therefore, the correct answer is option D
Answer:
The answer is 60. x = 60
Step-by-step explanation:
All sides of a triangle would be 180 all together. 180/3 is 60.