Using it's concept, there is a 0.615 = 61.5% probability of an student receiving a grade of B or better.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
Researching this problem on the internet, it is found that out of 26 students, 16 scored B or better, hence the probability is given by:
p = 16/26 = 0.615 = 61.5%.
More can be learned about probabilities at https://brainly.com/question/14398287
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