Factor the numbers x^{2} + 13x +36
1 answer:
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Answer: 0.421875
Step-by-step explanation:
According to the geometric distribution,
The probability that x number of trials take place until the first success occurs will be
, where p is the probability of getting success in each trial.
Given : The probability that a phone call produces a completed survey is p=0.25.
then q=1-0.25=0.75
Now, the probability that more than three phone calls are required to produce one completed survey :
Hence, the probability that more than three phone calls are required to produce one completed survey = 0.421875
About 1407 sharks would be needed to have a margin of error of 0.25
<h3>What is margin of error?</h3>
Margin of error is used to determine by what value there is deviation from the real value. Margin of error (E) is given by:
The 90% confidence level have a z score of 1.645. Hence for E = 0.25, standard deviation = 5.7 feet, hence:
About 1407 sharks would be needed to have a margin of error of 0.25
Find out more on margin of error at: brainly.com/question/10218601