Answer:
b) 0.9313
c) mean = 2.4
standard deviation= 1.3856
d) 0.5583
Step-by-step explanation:
Given:
p = 0.2
n = 12
a) X= number of applicants classified as deceptive.
Probability mass function of X will be:

b) Probability that the polygraph says at least 1 is deceptive:

= 1 - 0.0687
= 0.9313
c) The mean number among 12 truthful persons who will be classified as deceptive:
E(X) = n•p
= 12 * 0.2
= 24
Standard deviation:

= 1.3856
d) Probability that the number classified deceptive is less than the mean:

= 0.5583
Answer:
Factor and set each factor equal to zero.
x=7,−4
Step-by-step explanation:
Move all terms to the left side and set equal to zero. Then set each factor equal to zero.
Answer:
Step-by-step explanation:
<u>∠4 and 158° are supplementary as same side interior angles</u>
- m∠4 + 158° = 180°
- m∠4 = 180° - 158° = 22°
Answer: The value of both expressions when t=6 is 51, The value of both expressions when t=3 is 23,The two expressions are not equivalent.
Step-by-step explanation: i think thats it........but i might be wrong,,,,plz dont be mad if i am