Mixed Confidence Intervals Quiz
Mathematics
11th - 12th Grade
CCSS covered
Used 22+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the z table or your calculator to find the critical value that corresponds to 92% confidence.
1.41
1.75
1.81
1.96
Tags
CCSS.HSS.ID.A.4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the t table to find the critical value.
96% confident, df = 10
2.36
2.76
1.95
2.40
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the t table to find the critical value.
95% confident, sample size = 8
2.36
2.31
1.89
1.86
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose the appropriate confidence interval for the situation:
A random sample of 30 movie theaters showed that the average price for a movie was $10 with a standard deviation of $1.20.
z confidence interval for a mean
t confidence interval for a mean
z confidence interval for a proportion
t confidence interval for a proportion
Tags
CCSS.HSS.ID.A.4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Compute a 90% confidence interval for the situation:
A random sample of 30 movie theaters showed that the average price for a movie was $10 with a standard deviation of $1.20.
(9.71, 10.29)
(9.934, 10.066)
(9.64, 10.36)
(9.628, 10.372)
Tags
CCSS.HSS.IC.B.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose the appropriate confidence interval for the situation:
After watching a horror film, 34 out of 50 people reported problems getting to sleep.
z confidence interval for a mean
t confidence interval for a mean
z confidence interval for a proportion
t confidence interval for a proportion
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Compute a 95% confidence interval:
After watching a horror film, 34 out of 50 people reported problems getting to sleep.
(.55, .81)
(.571, .789)
(.671, .689)
There is not enough information to compute a confidence interval.
Tags
CCSS.HSS.IC.B.4
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