Data is statistically significant if

if the p-value is less than alpha

Read #13 on your paper: Which of the following is not a needed condition?

(81/216)(216)>10 and (1-81/216)(216) > 10

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HYP testing and CI for Proportions

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Questions 16

Answers

1
What are the null and alternative hypotheses?
Ho: p= 0.47 and Ha: p >0.47
Ho: p-hat= 81/216 and Ha: p-hat ≠ 81/216
Ho: p-hat= 0.47 and Ha: p-hat ≠0.47
Ho: p= 0.47 and Ha: p ≠0.47
2
# 9 Which of the following is not true about constructing confidence intervals?
A
B
C
D
3
Which of the following do NOT make the margin of error wider?
decreasing sample size
increasing sample size
Increasing standard deviation
Increasing Confidence Level
4
Data is statistically significant if
the p-value is less than p
if the p-value is greater than p
if the p-value is less than alpha
if the p-value is greater than alpah
5
A p-value tells us the probability of a statistics happening on the assumption that the H0 is:
Unknown
False
True
Real
6
What is the correct conclusion for #12?
A
C
B
7
#14: What is the 96% confidence interval for the difference in the proportions of good parts?
(-0.0229, 0.10294)
(-0.0156, 0.09557)
(-0.013, 0.09303)
8
#7 For the interval (0.25, 0.32), the sample proportion is
not enough information to answer
0.07
0.57
0.285
9
For #13: What is the z-score and p-value?
z=-2.797 and p-value = 0.010
z=-2.797 and p-value = 0.995
z=-2.797 and p-value = 0.005
10
#13---Do you reject or fail to reject?
Fail to Reject
Reject
11
Read #13 on your paper: Which of the following is not a needed condition?
Pop of all students > 2160
(81/216)(216)>10 and (1-81/216)(216) > 10
Random sample of 216 students
0.47(216)>10 and 0.53(216)>10
12
#11--read it on your paper
B
D
A
C
13
# 12--Read it on your paper. Which of the following is NOT a needed condition?
Random Sample of 250 HS students
0.84(250)>10 and 0.16(250)>10
n > 30
Pop of all HS Students > 2500
14
# 13 What is the formula needed?
B
A
C
D
15
Still using #12: What is the confidence interval?
(0.79456, 0.88544)
(0.79238, 0.88762)
(0.78028, 0.89972)
(0.78606, 0.89394)
16
What is the degree of confidence for #8?
90%
95%
96%
98%

HYP testing and CI for Proportions Flashcards | StudBud

HYP testing and CI for Proportions

16 termsStudBud Administration76 plays

Imported from external platform

Flashcards16 cardsFPractice quizPHost liveL

Questions 16

Answers

1
What are the null and alternative hypotheses?
Ho: p= 0.47 and Ha: p >0.47
Ho: p-hat= 81/216 and Ha: p-hat ≠ 81/216
Ho: p-hat= 0.47 and Ha: p-hat ≠0.47
Ho: p= 0.47 and Ha: p ≠0.47
2
# 9 Which of the following is not true about constructing confidence intervals?
A
B
C
D
3
Which of the following do NOT make the margin of error wider?
decreasing sample size
increasing sample size
Increasing standard deviation
Increasing Confidence Level
4
Data is statistically significant if
the p-value is less than p
if the p-value is greater than p
if the p-value is less than alpha
if the p-value is greater than alpah
5
A p-value tells us the probability of a statistics happening on the assumption that the H0 is:
Unknown
False
True
Real
6
What is the correct conclusion for #12?
A
C
B
7
#14: What is the 96% confidence interval for the difference in the proportions of good parts?
(-0.0229, 0.10294)
(-0.0156, 0.09557)
(-0.013, 0.09303)
8
#7 For the interval (0.25, 0.32), the sample proportion is
not enough information to answer
0.07
0.57
0.285
9
For #13: What is the z-score and p-value?
z=-2.797 and p-value = 0.010
z=-2.797 and p-value = 0.995
z=-2.797 and p-value = 0.005
10
#13---Do you reject or fail to reject?
Fail to Reject
Reject
11
Read #13 on your paper: Which of the following is not a needed condition?
Pop of all students > 2160
(81/216)(216)>10 and (1-81/216)(216) > 10
Random sample of 216 students
0.47(216)>10 and 0.53(216)>10
12
#11--read it on your paper
B
D
A
C
13
# 12--Read it on your paper. Which of the following is NOT a needed condition?
Random Sample of 250 HS students
0.84(250)>10 and 0.16(250)>10
n > 30
Pop of all HS Students > 2500
14
# 13 What is the formula needed?
B
A
C
D
15
Still using #12: What is the confidence interval?
(0.79456, 0.88544)
(0.79238, 0.88762)
(0.78028, 0.89972)
(0.78606, 0.89394)
16
What is the degree of confidence for #8?
90%
95%
96%
98%