Proportional numbers are numbers with the same equivalent ratio
98/126 is proportional to 84/108
The number is given as:
Reduce fraction to the lowest term
Reduce 86/110 to the lowest term
Divide by 2/2
43/55 is not equivalent to 7/9
Reduce 98/126 to the lowest term
Divide by 14/14
7/9 is equivalent to 7/9.
Hence, 98/126 is proportional to 84/108
Read more about proportional numbers at:
Using the binomial distribution, it is found that the probability that at least 12 of the 13 adults require eyesight correction is of 0.163 = 16.3%. Since this probability is greater than 5%, it is found that 12 is not a significantly high number of adults requiring eyesight correction.
For each person, there are only two possible outcomes, either they need correction for their eyesight, or they do not. The probability of a person needing correction is independent of any other person, hence, the binomial distribution is used to solve this question.
<h3>What is the binomial distribution formula?</h3>The formula is:
The parameters are:
In this problem:
The probability that at least 12 of them need correction for their eyesight is given by:
In which:
Then:
The probability that at least 12 of the 13 adults require eyesight correction is of 0.163 = 16.3%. Since this probability is greater than 5%, it is found that 12 is not a significantly high number of adults requiring eyesight correction.
More can be learned about the binomial distribution at brainly.com/question/24863377