The answer is "c. continuous probability distribution."
"Continuous" means it is a subset of the real numbers set: it can take any value in a specified range. For example, if you break at random a stick with a given length of 12 cm, and then measure the shortest piece, you can get any value in the range (0 cm, 6 cm). This is a continuous random variable.
A random variable is said to be "discrete" if it can only take values from a finite (or countably infinite) set. For example, if you roll a dice, you can get only 1, 2, ..., 6. But you cannot get any vaue in the range [1, 6], because the value must be an integer (e.g., you cannot get the vaue 2.5). This is a discrete random variable.
A somewhat technical explanation:
- A random variable is a mapping from a event space to a number set: it associates a number (a value of the variable) with every event.
- The random variable is said to be continuous if it maps events to numbers from a subset of the set of real numbers.
- The probability distributions corresponding to continuous random variables are called continuous probability distributions.
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:
200
Step-by-step explanation:
= (6.6/3.3) × 10^(-2-(-4))
= 2 × 10^2 = 200
-45=-6(-4+3f)
-45=24+18f
-69=18f
f= -23/6 or -3.83