11.04 & 11.05 Quiz
Mathematics
9th Grade
CCSS covered
Used 1+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
According to the empirical rule, what is the percentage of data that falls within one standard deviation of the mean?
67%
65%
72%
68%
Tags
CCSS.HSS.ID.A.4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Using the empirical rule, what is the percentage of data that falls within two standard deviations of the mean?
68%
99.7%
95%
98%
Tags
CCSS.HSS.ID.A.4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the percentage of data that falls within three standard deviations of the mean, according to the empirical rule?
99.7%
98.7%
95%
100%
Tags
CCSS.HSS.ID.A.4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Using the Empirical Rule:
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.
About what percent of the products last between 12 and 15 days?
68%
34%
16%
2.5%
Tags
CCSS.HSS.ID.A.4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
500 juniors at Central High School took the ACT last year. The scores were distributed normally with a mean of 24 and standard deviation of 4. Approximately how many juniors scored between 16 and 32?
340
250
475
95
Tags
CCSS.HSS.ID.A.4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 99.7% of molds filled by this machine will hold weights in what interval?
Tags
CCSS.HSS.ID.A.4
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What percentage of the data is between 1 and 2 standard deviations
34%
50%
2.35%
13.5%
Tags
CCSS.HSS.ID.A.4
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