Who ever gets it right first gets brainliest
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Answer:
0.1091 or 10.91%
Step-by-step explanation:
We have been given that a particular telephone number is used to receive both voice calls and fax messages. suppose that 20% of the incoming calls involve fax messages and consider a sample of 20 calls. We are asked to find the probability that exactly 6 of the calls involve a fax message.
We will use Bernoulli's trials to solve our given problem.
Therefore, the probability that exactly 6 of the calls involve a fax message would be approximately 0.1091 or 10.91%.
The function is increasing on the intervals
x ∈ (-∞, -1) ∪ (1, ∞)
x ∈ (-∞, -1) ∪ (1, ∞)