Question: Read the three problems listed below and determine: (1) what type of probability distribution would be used to solve each problem and why; (2) pick
Read the three problems listed below and determine: (1) what type of probability distribution would be used to solve each problem and why; (2) pick one problem from below and provide a detailed solution with an explanation; (3) indicate which problem you selected to solve in your subject line.
i. The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard deviation of 24 words per minute. Find and interpret the probability that a randomly selected sixth-grade student reads less than 100 words per minute.
ii. A Wendy's manager performed a study to determine a probability distribution for the number of people, X, waiting in a line during lunch. The results were as follows. Find and interpret the probability that 10 or more people are waiting in line for lunch?
x | P(x) | x | P(x) |
|---|---|---|---|
0 | 0.011 | 7 | 0.098 |
| 1 | 0.035 | 8 | 0.063 |
| 2 | 0.089 | 9 | 0.035 |
| 3 | 0.150 | 10 | 0.019 |
| 4 | 0.186 | 11 | 0.004 |
| 5 | 0.172 | 12 | 0.006 |
| 6 | 0.132 |
iii. Clarinex-D is a medication whose purpose is to reduce the symptoms associated with a variety of allergies. In clinical trials of Clarinex-D, 5% of the patients in the study experienced insomnia as a side effect. As random sample of 20 Clarinex-D users is obtained, and the number of patients who experienced insomnia is recorded. Find and interpret probability that 3 or fewer experienced insomnia as a side effect.
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