AP Statistics Tests of Significance

Quiz
•
Mathematics
•
9th - 12th Grade
•
Hard
Barbara White
FREE Resource
18 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 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
2 mins • 1 pt
Which of the following represents the appropriate null & alternative hypotheses?
"We want to show that the mean height of women is greater than 64"
H₀: μ = 64"
Hₐ: μ ≠ 64"
H₀: μ = 64"
Hₐ: μ > 64"
H₀: p = 64"
Hₐ: p ≠ 64"
H₀: p = 64"
Hₐ: p > 64"
3.
MULTIPLE CHOICE QUESTION
2 mins • 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
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
At the Chrysler manufacturing plant, there is a part that is supposed to weigh 19 pounds, on average. The engineers take a sample of parts and want to know if they meet the weight specifications. Their sample's mean weight is 17 pounds What are our null and alternative hypotheses?
Ho : μ = 17
Ha : μ ≠ 19
Ho : μ = 19
Ha : μ ≠ 19
Ho : μ = 19
Ha : μ ≠ 17
Ho : μ = 17
Ha : μ ≠ 17
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Use the notation to state the alternative hypothesis and null hypothesis: "We suspect that less than 4% of high school students take Statistics."
Ho : μ = 0.04
Ha : μ > 0.04
Ho : μ = 0.04
Ha : μ < 0.04
Ho : p = 0.04
Ha : p < 0.04
Ho : p = 0.04
Ha : p > 0.04
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A P-value indicates:
the probability that the null hypothesis is true
the probability that the alternative hypothesis is true
the probability of obtaining the observed results (or one more extreme) if the null hypothesis is true
probability of a Type I error
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A principal at a school is worries that his students are below average intelligence. A random sample of 30 students’ IQ scores has a mean of 96. Given that IQ scores are Normally distributed with a mean of 100 and standard deviation of 15, is there sufficient evidence to support the principal’s claim?
What is the null hypothesis?
μ = 96
μ = 100
μ < 100
μ > 100
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