1) What is the expected value of a single roll of the die? 2) What is...
1)
What is the expected value of a single roll of the die?
2) 
What is the probability of rolling a 3.5?
3)
A study of a new cholesterol drug measures the decrease in LDL (the "bad" cholesterol) of a group of 5 of patients. The recorded changes in cholesterol were -20.4, -18.0, -7, -2.8, -3.2. What is the expected value of the drop in cholesterol for this drug?
Question 3 options:
|
The mean of the five values shown above. |
|
|
Take the probability of each of the five values and multiply by the cholesterol value. Then add them. |
|
|
Unable to determine. We would need to examine a density curve. |
4)
A study of a new cholesterol drug measures the decrease in LDL (the "bad" cholesterol) of a group of 500 of patients. The drop in cholesterol followed an approximately Normal distribution: N(-20.0, 2). What is the probability that a person chosen at random will have a cholesterol drop of between -22 and -18?
Question 4 options:
|
About 16% |
|
|
About 32% |
|
|
About 68% |
|
|
Unable to determine. |
Homework Answers
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What is the expected value of a single roll of the
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What is...
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