Confidence Intervals and p hat Quiz
Authored by Chuck Baker
Mathematics
9th Grade
CCSS covered
Used 2+ times
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19 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the first condition that needs to be checked in problems related to confidence intervals?
Data needs to come from a systematic random sample
Data needs to come from a stratified random sample
Data needs to come from a cluster random sample
Data needs to come from a simple random sample
Tags
CCSS.HSS.IC.B.4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What does the 10 % condition ensure in problems related to confidence intervals?
It ensures that trials or selections are approximately independent of one another
It ensures that the sample size is at least 10
It ensures that the data is normally distributed
It ensures that the sample is a simple random sample
Tags
CCSS.HSS.IC.B.4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the purpose of checking the large counts condition in problems related to confidence intervals?
To ensure that the population data is normally distributed
To ensure that the sample size is large enough
To ensure that the data is not biased
To ensure that the sampling distribution of p hat is approximately normal
Tags
CCSS.HSS.IC.B.4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What substitution is made in the formula for the standard deviation in problems related to confidence intervals?
P hat is substituted for n
P is substituted for p hat
P hat is substituted for p
N is substituted for p
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What symbol is used to represent the critical value in problems related to confidence intervals?
T star
Z star
X star
Y star
Tags
CCSS.HSS.ID.A.4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the critical value for an 80% confidence interval?
0.84
2.33
1.96
1.28
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Use Table A or invNorm( to calculate a critical value for a confidence level of 94%
z* = 1.88
z* = 1.55
{-0.038, 0.038}
{-0.075, 0.075}
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