Answer:
Option A 0.312 is right
Step-by-step explanation:
Given that iN Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.0% of the DVD players sold at store B are defective.
Prob for any random item form store to be defective = Prob from A and defective +Prob from B and defective
=![0.43(0.024)+0.57(0.04)\\=0.03312](https://tex.z-dn.net/?f=0.43%280.024%29%2B0.57%280.04%29%5C%5C%3D0.03312)
Prob it came from A and defective = 0.![0.43(0.024)=0.01032](https://tex.z-dn.net/?f=0.43%280.024%29%3D0.01032)
If Kate receives one of these DVD players as a gift and finds that it is defective, what is the probability that it came from store A
=![\frac{0.01032}{0.03312} \\=0.312](https://tex.z-dn.net/?f=%5Cfrac%7B0.01032%7D%7B0.03312%7D%20%5C%5C%3D0.312)
Answer:
Step-by-step explanation:
?
we have
-------> inequality A
The solution of the inequality A is the interval------> (-∞,-2)
All real numbers less than ![-2](https://tex.z-dn.net/?f=-2)
-------> inequality B
The solution of the inequality B is the interval------> [4,∞)
All real numbers greater than or equal to ![4](https://tex.z-dn.net/?f=4)
The solution of the compound inequality A or B is equal to
Solution A+Solution B
(-∞,-2) U [4,∞)
therefore
the answer in the attached figure
This graph shows that a bus drove forward to a station fairly fast, stayed there for a short while, then backed up to the last station, stayed there for a short while, and finally drove off to another station.
The graph has no roots
the answer is A