1. The following are the scores obtained by 30 students in epidemiology test:
83 67 94 77 55 82
79 72 88 65 81 63
92 61 85 71 79 70
89 52 66 63 75 84
99 81 73 79 68 77
a) Apply the Statdisk and look for the user-defined relative frequency histogram having a class width of 10 from 50. The labels must be “on”. Copy the histogram in this sheet.
b) Look for the Normality Assessment using the Statdisk.
Does it show the sample from the normal population?
Are the results from the histogram and the test results the same with regard to normality?
What did you apply for the alpha level of the test? 0
c) Refer to the Statdisk, get the descriptive statistics of the data below:
d) Sarah got 79 in her exam. The z-score is shown below: 0.2927
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3. Every person at St. Goodenough Hospital is categorized as below average, average, or above average with regard to the understanding. They are also divided as fair, good, or excellent. The evaluation is shown below:
—-Potential for Advancement—-
Prof. Knowledge Fair Good Excellent
Below Average 16 12 22
Average 45 60 45
Above Average 93 72 135
a) Get the probability of the chosen employee at random having the excellent potential advancement.
b) Get the probability of the person being selected at random who is having an average or above average professional knowledge, as well as excellent potential advancement.
4. Correctly, what is the Central Limit Theorem (CLT)? Explain in full detail why is it essential?
1) When the samples of size of at least 30 came...