A recent study asked a random sample of 527 college-age adults (18–24 years old) about their plans for purchasing a new computer. Of the sample, 105 said that they planned to purchase a Mac computer within the next year. Construct and interpret a 95% confidence interval for the proportion of all college-age adults who plan to purchase a Mac computer within the next year.
STATE: (what are you looking for)
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Question 2
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PLAN: (identify your method and check the conditions)
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Question 3
3.
DO: (calculate the interval)
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Question 4
4.
CONCLUDE: (Interpret the interval)
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Question 5
5.
Abbie wonders about college plans for all the students at her large high school (over 3000 students). Specifically, she wants to know the proportion of students who are planning to go to college. Abbie wants her estimate to be within 5 percentage points (0.05) of the true proportion at a 90% confidence level. How many students should she randomly select?
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Question 6
6.
STATE
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Question 7
7.
PLAN
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Question 8
8.
DO (Your calculator expects a whole number of X. It is OK to round)
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Question 9
9.
CONCLUDE
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Question 10
10.
STATE
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Question 11
11.
PLAN
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Question 12
12.
DO
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Question 13
13.
CONCLUDE
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Question 14
14.
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Question 15
15.
Explain
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Question 16
16.
Your answer should be around ~1800-2000 depending on how much you rounded.
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Question 17
17.
Should be ~20-80 more
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Question 18
18.
You answer should be around 400-500 depending on how much you rounded
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Question 19
19.
Are there any problems above that you would like to go over in class? Indicate the question numbers below (Numbers refer to the Formative question number). I'll try to cover anything that is highly requested.