Answer:
D. 0.95
Step-by-step explanation:
The probability that at any moment, at least one of the systems will work is determined by the probability that system I works, added to the probability that system II works, and subtracted by the probability that both systems work:
The probability that at any moment at least one of the systems will work is about 0.95.
PLEASE MARK AS BRAINLIEST
Answer: 
Step-by-step explanation:
See file attached
3/5 = 12/20 plus 1/4 which = 5/20 = 17/20, 20/20-17/20= 3/20
Answer:
Option A is correct.
Sample space is the collection of all possible outcomes of a random phenomenon.
Step-by-step explanation:
- Sample Space
The sample space of a phenomenon is the set of all possible outcomes for that phenomenon.
- Distribution
The distribution of a statistical data set is defined as a listing or function showing all the possible values (or intervals) of the data and how often they occur.
- Probability
Probability describes how likely something is to happen. Probability values are usually between 0 and 1; with 0 denoting impossibility and 1 denoting total certainty.
- Census
Census is an official count or survey of a population
1. $6.00. so it would be $36
2. 14 have blue shirt
21 don't have a blue shirt
