Module 2 Exercise 2
Authored by Joan Malvas
Mathematics
11th Grade
CCSS covered
Used 71+ times
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10 questions
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1.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
Let the normal random variable X be the weight in lbs. of a green batch student. In this distribution, approximately 99.7% of the weights fall within 104 and 152 lbs.
What is the mean of this distribution? (Indicate the value ONLY. Do not label)
(a)
Tags
CCSS.HSS.ID.A.4
2.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
Let the normal random variable X be the weight in lbs. of a green batch student. In this distribution, approximately 99.7% of the weights fall within 104 and 152 lbs.
What is the standard deviation of this distribution? (Indicate the value ONLY. Do not label)
(a)
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Let the normal random variable X be the weight in lbs. of a green batch student. In this distribution, approximately 99.7% of the weights fall within 104 and 152 lbs.
In which TWO values will approximately 68% of the weights fall?
120
136
112
144
Tags
CCSS.HSS.ID.A.4
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Let the normal random variable X be the weight in lbs. of a green batch student. In this distribution, approximately 99.7% of the weights fall within 104 and 152 lbs.
Approximately what percent of the batch would you expect to weigh greater than 144 lbs?
2.5%
2.35%
13.5%
15.85%
Tags
CCSS.HSS.ID.A.4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Let the normal random variable X be the weight in lbs. of a green batch student. In this distribution, approximately 99.7% of the weights fall within 104 and 152 lbs.
What is the probability that a student weighs less than 112 lbs?
2.35%
2.5%
13.5%
15.85%
Tags
CCSS.HSS.ID.A.4
6.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
The time spent by kids in front of the television can be modelled by a normal distribution. In this distribution, about 95% of the kids spend between 1000 and 2000 hours in front of the television.
What is the mean of this distribution? (Indicate the value ONLY. Do not label.)
(a)
Tags
CCSS.HSS.ID.A.4
7.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
The time spent by kids in front of the television can be modelled by a normal distribution. In this distribution, about 95% of the kids spend between 1000 and 2000 hours in front of the television.
What is the standard deviation of this distribution? (Indicate the value ONLY. Do not label.)
(a)
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