78-46 equals 32 70-48 equals 22
So it takes half an hour to set up a computer work station. half an hour = 30 minutes. so we know 2 half hours = 1 hour. so 7-2=5 so 1 hour 5-2=3 s0 that makes 2 hours. 3-2=1 so that would be 3 and a half hours or 3.5
Answer:
2
Step-by-step explanation:
Because it goes up 1 and a half and over 1 which equals 2?
The conditional probability that the carbon emission is beyond the permissible emission level and the test predicts this is given by:
a. 0.2975.
<h3>What is Conditional Probability?</h3>
Conditional probability is the probability of one event happening, considering a previous event. The formula is:
In which:
- P(B|A) is the probability of event B happening, given that A happened.
- is the probability of both A and B happening.
- P(A) is the probability of A happening.
In this problem, we have that the events are as follows:
- Event A: Carbon emission beyond the permissible emission level.
- Event B: Test predicts this.
We have that 35% of the units have carbon emission beyond the permissible emission level, and the test is 85% accurate, hence:
Then:
Which means that option a is correct.
More can be learned about conditional probability at brainly.com/question/14398287
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