If your answer is a True/False question, then your answer is True.
Self-esteem means confidence in one's own worth or abilities; self-respect (Oxford) And therefore giving yourself more positive thoughts can build your confidence in yourself.
Answer:
So we expect about 5 people with the disease in the random sample.
Explanation:
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
Solution to the problem
For this case we can assume that our random variable who represent the number of students that develop the disease is distributed on this way 
And from definition the expected value is given by:
And the variance is given by:
And the deviation is given by:
So we expect about 5 people with the disease in the random sample.
Answer:
Where to begin...First off, an obvious answer would be what disease was being discussed. Different diseases can vary in intensity for a variety of reasons. For example, let's say person 1 found out about his infection long before person 2? Person one will most likely have fewer and much less symptoms then person 2, and in some illnesses, may even be able to treat it in early stages. Let's say, however, that the disease was the same disease at the same stage for two different people. Resources could obviously effect the quality of life both have. While someone with a disease may be able to recieve medical staff, vaccines and machines that may allow them to recover with no issues, someone in africa may simply have to take it with no or little medical equipment, ultimetly putting their life on the line. The final thing I will discuss that is probably the biggest factor, genetics. Some people have immune systems strong enough to fight pretty much anything, while others could pass away from a cold. This has a major effect on quality of life, as the people with strong immune systems will be able to pretty much walk away from a disease with very few complications, while someone with a very weak immune system could walk away with weakened hearts, hernias, and in some cases, fatality.
Sorry the explanation was so long, but I do hope it's helped! :)
D). Depression.
Depression usually companies feelings of guilt and discouragement. Out of the choices, depression seems to be the most likely choice.
BUT, it’s important to note that from her symptoms, it’s NOT enough to make a diagnosis, since there isn’t enough information. Even though her symptoms seem to direct to depression, the amount of time she has been feeling this way is important to diagnose directly. A). Anxiety disorder isn’t appropriate, since from her symptoms doesn’t stand out pointing to the typical symptoms of an anxiety disorder. This is not saying that she doesn’t have it, but in this circumstance it seems she doesn’t. B). Paranoida and C). Schizophrenia wouldn’t be appropriate diagnosis since the two of them are very complex to be able to say that she has them without further questions. Even though her symptoms is also involved in these disorders, it isn’t much to go on, so the most likely educated guess would be D). Depression.
