The correct conclusion with a p-value of .018 and an alpha of .05 is to...

reject the null, there is statistical evidence

The p-value is .018. What is the correct interpretation of this p-value?

1.8% of the time avg height will be 64 or more just because of variation

The restaurant claims 3 out of 4 customers LOVE their food! Is this a valid claim?

No because 3/4 is outside of a 95% confidence interval.

What is the difference between parameters and statistics?

parameters from the population, statistics from the sample

Describe the histogram.

uniform, symmetric, no outliers or gaps

Describe the sampling distribution for random samples of 30 students.

Normal with mean = 62 and s = 0.5477

studbud

AP Statistics Exam Review

18 termsStudBud Administration31 plays

Questions to get ready for the AP Statistics Exam!

Flashcards18 cardsFPractice quizPHost liveL

Questions 18

Answers

1
What are the degrees of freedom for this situation?
13
3.7
64
14
2
What type of hypothesis test would be best to analyze this scenario?
Two-Proportion Z Test
Two-Mean T Test
One-Mean T Test
One-Proportion Z Test
3
What type of hypothesis test would be best to analyze this scenario?
Two-Proportion Z Test
Two-Mean T Test
One-Mean T Test
One-Proportion Z Test
4
The correct conclusion with a p-value of .018 and an alpha of .05 is to...
reject the null, there is statistical evidence
fail to reject the null, there is not statistical evidence
fail to reject the null, there is statistical evidence
reject the null, there is not statistical evidence
5
The p-value is .018. What is the correct interpretation of this p-value?
1.8% of the time avg height will be 64 or more just because of variation
There is a 1.8% chance that Native Americans are taller than 62in
1.8% of Native Americans are in the study
There is a 1.8% probability of statistically significant evidence
6
What’s the best measurement of center for skewed data?
median
Mode
Range
Mean
7
What could the restaurant change to make a wider interval?
Lower the confidence level
Increase the sample size
Decrease the sample size
8
The restaurant claims 3 out of 4 customers LOVE their food! Is this a valid claim?
No because 3/4 is outside of a 95% confidence interval.
Yes because 3/4 is within a 95% confidence interval.
No because only 63% of the sample liked the food.
No because 95% of customers are in the confidence interval.
9
What type of hypothesis test would be best to analyze this scenario?
One-Proportion Z Test
One-Proportion Z-interval
Two-proportion z-interval
Two-Proportion Z Test
10
What is the probability that a random sample of 70 students has a height less than 61in?
.27
.0034
.0058
.027
11
What is the difference between parameters and statistics?
parameters from sample, statistics from the population
parameters not exact, statistics are exact
parameters are exact, statistics not
parameters from the population, statistics from the sample
12
Find the margin of error.
.048
.089
1.54
.095
13
Describe the histogram.
multimodal, skewed right, no outliers or gaps
uniform, symmetric, no outliers or gaps
multimodal, skewed left, no outliers or gaps
14
Describe the sampling distribution for random samples of 30 students.
Skewed right with mean = 62 and s = 0.5477
Skewed right with mean = 62 and s = 3
Normal with mean = 62 and s = 0.5477
Normal with mean = 62 and s = 3
15
Identify the sampling method used
Voluntary Response
Cluster
SRS
Stratified
16
Experimental Design
Cluster
Multistage
Stratified
Systematic
17
How does changing the sample size affect the margin of error?
.015
.95
.03
.19
18
The alternative hypothesis should be written as H_A
Ha: µ<64
Ha: µ>62
Ha: µ=64
Ha: µ>64

AP Statistics Exam Review Flashcards | StudBud