AP Stats Hypothesis Testing Proportions

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Identify the correct null hypothesis:
Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.
H0: p = 0.50
H0: µ = 100
H0: p = 0.48
H0: µ = 96
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When performing a test about the population proportion, what distribution would you need to use?
z
t
chi-square
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the critical value (in a test about proportions) for a left-tailed test with α = 0.05 and n ≥ 30.
z0 = -1.645
z0 = -2.33
z0 = -1.96
z0 = 2.58
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%. They will use a follow up poll to access effectiveness. What are the correct null and alternative hypotheses?
Ho: μ > 21
Ha: μ < 21
Ho: p > .20
Ha: p < .20
Ho: p < .21
Ha: p > .21
Ho: p > .21
Ha: p < .21
5.
DROPDOWN QUESTION
1 min • 1 pt
The manufacturer of soft drink A advertises that they have 60% of the soft drink market. A consumer group that monitors sales thinks that this percentage is no longer true. In a blind taste test of 100 people, 58 people selected soft drink A. Is this evidence that the percentage of the market for soft drink A is different than advertised? H0 : Ha :
p = 0.6
p ≠ 0.6
p0 = 0.6
p0 < 0.6
p>0.6
p = 0.58
p≠0.58
p0 = 0.58
p0 ≠ 0.58
6.
MATCH QUESTION
1 min • 1 pt
A leading research firm reports that 33% of young adults have completed a college degree. One state leader who is trying to create more scholarship money for college believes that the rate is lower than that in his state. The state leader commissions a study that surveys 500 young adults in the same age bracket as the national study to see if they have completed a college degree. Of the 500 interviewed, 152 have completed a college degree. Conduct a hypothesis test to see if the state leader has evidence to support his claim.
0.304
x
0.05
n
152
p
0.330
α
500
p̂
7.
MATCH QUESTION
1 min • 1 pt
In one year, a national vital statistics report indicated that about 3% of all births produced twins. Data from a large city hospital found only 7 sets of twins were born to 469 teenage girls. Does that suggest that mothers under age 20 may be less likely to have twins? Test at a .05 significance level.
Match the following
469
p̂
1.5%
α
7
x
3%
n
5%
p0
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