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[AP Statistics] 8.2b Classwork/Homework

Last updated 7 months ago

19 questions

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(Or calculator work) Stat - Test - 1PropZInt

Question 1

1.

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)

Question 2

2.

PLAN: (identify your method and check the conditions)

Question 3

3.

DO: (calculate the interval)

Question 4

4.

CONCLUDE: (Interpret the interval)

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?

Question 6

6.

STATE

Question 7

7.

PLAN

Question 8

8.

DO (Your calculator expects a whole number of X. It is OK to round)

Question 9

9.

CONCLUDE

Question 10

10.

STATE

Question 11

11.

PLAN

Question 12

12.

DO

Question 13

13.

CONCLUDE

Question 14

14.

Yes

No

Question 15

15.

Explain

Question 16

16.

Your answer should be around ~1800-2000 depending on how much you rounded.

Question 17

17.

Should be ~20-80 more

Question 18

18.

You answer should be around 400-500 depending on how much you rounded

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.