Answer:
p=0.8765
Step-by-step explanation:
Let the following variables be represented as below:
Total Set,t=17
Def,d=3
Not Def,n=14
Purchases,p=8
The number of ways the hotel can receive at least one defective set in a purchase of 8 sets is calculated using the combination:-

So the proability of getting at least one defective unit is 0.8765
Answer: −1.409
Step-by-step explanation:
Probability of drawing 3 hearts: 13/52 * 12/51 * 11/50 = 0.013
Probability of drawing 3 black cards: 26/52 * 25/51 * 24/50 = 0.118
Probability of other draw: 1 - 0.013 - 0.118 = 0.869
0.013 * (50 - 5) = 0.585
0.118 * (25 - 5) = 2.353
0.869 * (0 - 5) = -4.347
Expected value: 0.585+ 2.353 - 4.347 = -1.409
Answer:
84is 30% of what number? 280
Step-by-step explanation:
Answer:
x=7
Step-by-step explanation:
x-1
3x-5
______
4x-6
4x-6= 7x-27
-4x -4x
___________
-6= 3x-27
+27 +27
____________
21= 3x
divide both 21 and 3x by 3
= 
7 = x
x=7