Answer:

Step-by-step explanation:
Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.To calculate combinations the below formula is used:

where
represents the total number of items and
represent the number of items being chosen at a time. The '!' represents factorial function which is the product of all integers equal to and less than the given integer. This can be calculated manually using the formula or by using the nCr function on a scientific calculator.
Thus, the number of ways to select 2 freshmen girls (2FG) and 3 freshmen boys (3FB) can be determined. The number of ways to select 5 students (5S) can be determined in the same way.



The probability of selecting 2 freshmen girls (2FG) and 3 freshmen boys (3FB) when selecting 5 students out of 30 is given as below:

10000 times the value of the other one
The total bill (before tax and tip) = $90
Tax = 6% = 0.06
0.06 x $90 = $5.4
Tip = 20% = 0.20
0.20 x $90 = $18
$90 + $18 + $5.4 = $113.4 (Answer)
Using sampling concepts, it is found that the method that would result in a random sample is given by:
Pick 150 students' names from a jar that has the names of all the students in the school.
<h3>How are samples classified?</h3>
Samples may be classified as:
- Convenient: Drawn from a conveniently available pool.
- Random: All the options into a hat and drawn some of them.
- Systematic: Every kth element is taken.
- Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
- Stratified: Also divides the population into groups. Then, a equal proportion of each group is surveyed.
Researching the problem on the internet, the representative(all possible students can possibly be sampled) and random sample is given by the following option:
Pick 150 students' names from a jar that has the names of all the students in the school.
More can be learned about sampling concepts at brainly.com/question/25122507
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Answer:
dont have a different right?
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Step-by-step explanation:
dont have a different