There are 36 students in mrs.Keaton's sixth grade class. If 5/12 of her students are girls, how many girls are in the class?
2 answers:
Answer:
There are 15 girls in the class.
Step-by-step explanation:
There are 36 students in Mrs Keaton's sixth grade class.
If fraction of the class are girls then we have to calculate the number of girls in the class.
Since number of girls in the class = of 36
=
= 5×3
= 15 girls
Therefore, number of girls in the class is 15.
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Answer:
0.3968 = 39.68% probability this shipment passes inspection.
Step-by-step explanation:
The parts are chosen without replacement, which means that the hypergeometric distribution is used to solve this question.
Hypergeometric distribution:
The probability of x successes is given by the following formula:
In which:
x is the number of successes.
N is the size of the population.
n is the size of the sample.
k is the total number of desired outcomes.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In this question:
50 parts means that
4 defective means that
10 are chosen, which means that
What is the probability this shipment passes inspection?
Probability that none is defective, so:
0.3968 = 39.68% probability this shipment passes inspection.