help with hw Part 1 PART 2 A cyberchondriac is a person who

A cyberchondriac is a person who regularly searches the Web for health care information. A poll asked 1,021 adults how often (in the past month) they looked for health care information online. The results are summarized in the table to the right. Consider the response category of a randomly selected person who participated in the poll. a. List the sample points for the experiment. b. Assign resonable probability to the sample points. c. Find the probability that the respondent looks for health care information online more than two times per month Percentage of month) Respondents Response 26 30 25 None or 3-5 6-9 10 or more Total 13 100% a. List the sample points for this experiment. Select all that apply B. None D- 1 or 2 A. 6-9 C. 25 E. 10 or more G, 3-5 26 b. What are the probabilities for each sample point, in the order that they appear in the original table? OA 26, 30, 25, 6, 13 OB. None, or 2, 3-5, 6-9, 10 or more OC. 26%, 30%, 25%, 6%, 13% H. 30 13 D. 0.26. 0.30. 0.25, 0.06, 0.13

Solution

a)

The sample points, as you can see on the left column, are

None [B]
1 or 2 [D]
3-5 [G]
6-9 [A]
10 or more [E]

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b)

How do you present probabilities in class?

Both OPTION C AND D are acceptable. I think that usually, we use decimals, so I think OPTION D is a better answer.

Still, you should stick to what your class uses. [BEST ANSWER, OPTION D]

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c)

P(more than 2) = P(3-5) + P(6-9) + P(10 or more)

= 0.25+0.06+0.13

= 0.44 [ANSWER]

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