Question
In: Statistics and Probability
Suppose that ? is normally distributed with mean 100 and standard deviation 19. A. What is...
Suppose that ? is normally distributed with mean 100 and standard deviation 19.
A. What is the probability that ? is greater than 137.43? Probability =
B. What value of ? does only the top 16% exceed?
Solutions
orchestra answered 1 year agoRelated Solutions
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15. Suppose one individual is randomly chosen. Find
the probability that the person has an IQ less than 110. Include a
sketch of the graph and shade the area to be determined.
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15. Suppose one individual is randomly chosen. Let
X = IQ of an individual.
a. X ~ _____(_____,_____)
b. Find the probability that the person has an IQ greater than
120.
A.
0.05 B.
0.08 C.
0.09 D.
0.06 E.
0.07
c. Find the probability that the person has an IQ between 90 and
115.
A.
0.589 B.
0.664 C.
0.732 D.
0.531 E.
0.469
d. Find the 60th percentile
A.
98.6 B.
100.0 C.
103.8 D....
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15. Suppose one individual is randomly chosen. Let X =
IQ of an individual.
Part B
Find the probability that the person has an IQ greater than
110.
What is the probability? (Round your answer to four decimal
places.)
Part C
The middle 60% of IQs fall between what two values?
State the two values. (Round your answers to the nearest whole
number.)
What is the...
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15. Suppose an individual is randomly chosen. a) Find
the probability that the person has an IQ greater than 125. b) Find
the probability that the person has an IQ score between 105 and
118. c) What is the IQ score of a person whose percentile rank is
at the 75th percentile, ?75? d) Use the information from part (c)
to fill in the blanks and...
Suppose IQ scores are approximately normally distributed with a mean of 100 and a standard deviation...
Suppose IQ scores are approximately normally distributed with a
mean of 100 and a standard deviation of 15. Answer the following
questions.
Question 1
What percent of the population has an IQ that is above
average?
Question 2
What percent of the population has an IQ below 110?
What is the calculated z-score?
What is the percentage?
Question 3
What percent of the individuals in the population have an IQ
above 130? (Individuals in this category are sometimes classified
as...
Suppose IQ scores are approximately normally distributed with a mean of 100 and a standard deviation...
Suppose IQ scores are approximately normally distributed with a
mean of 100 and a standard deviation of 15. Answer the following
questions.
Question 1
What percent of the population has an IQ that is above
average?
Question 2
What percent of the population has an IQ below 110?
What is the calculated z-score?
What is the percentage?
Question 3
What percent of the individuals in the population have an IQ
above 130? (Individuals in this category are sometimes classified
as...
Suppose that IQ is normally distributed with mean of 100 and standard deviation of 10. Compute...
Suppose that IQ is normally distributed with mean of 100 and
standard deviation of 10. Compute the following:
What is the probability that a randomly selected individual has
IQ greater than 115? (2 pts)
What is the probability that a randomly selected individual has
IQ between 90 and 100? (3 pts)
Assume that a population is normally distributed with a mean of 100 and a standard deviation...
Assume that a population is normally distributed with a mean of
100 and a standard deviation of 15. Would it be unusual for the
mean of a sample of 3 to be 115 or more? Why or why not?
IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15. a) Suppose one individual is randomly chosen. Find
the probability that this person has an IQ greater than 95. Write
your answer in percent form. Round to the nearest tenth of a
percent. P (IQ greater than 95) = % b) Suppose one individual is
randomly chosen. Find the probability that this person has an IQ
less than 125. Write your answer in percent form....
IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...
IQ is normally distributed with a mean of 100 and a standard
deviation of 15.
a) Suppose one individual is randomly chosen. Find the
probability that this person has an IQ greater than 95. Write your
answer in percent form. Round to the nearest tenth of a percent. P
P (IQ greater than 95) = %
b) Suppose one individual is randomly chosen. Find the
probability that this person has an IQ less than 125. Write your
answer in percent...
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