Question
In: Statistics and Probability
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. Round to the nearest tenth of a percent. P (IQ less than 125) = % c) In a sample of 700 people, how many people would have an IQ less than 110? people d) In a sample of 700 people, how many people would have an IQ greater than 140? people
Solutions
Thank
you.
orchestra answered 2 years agoRelated Solutions
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...
. IQ is normally distributed with a mean of 100 and a standard deviation of 15....
. IQ is normally distributed with a mean of 100 and a standard
deviation of 15. Suppose an individual is randomly chosen. a) (3pt)
Find the probability that the person has an IQ greater than 125. b)
(4pt) Find the probability that the person has an IQ score between
105 and 118. c) (4pt) What is the IQ score of a person whose
percentile rank is at the 75th percentile, ?75? d) (3pt) Use the
information from part (c) to...
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
A) If one person are randomly selected, find the probability the IQ
score is greater than 112.
B)If one person are randomly selected, find the probability the IQ
score is less than 95.
C)If one person are randomly selected, find the probability the IQ
score is between 97 and 110.
D) If 16 people are randomly selected, find the probability the IQ
score will...
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
a) Find the proportion of the population that has an IQ higher
than 94
b) Find the proportion of the population that has an IQ
between 82 and 88
c) Find the IQ score that seperates the highest scoring 67%
from the rest of the population
Critical Values
Z0.05=
1.645
Z0.025=1.96
Z0.01=2.325
Z0.005=2.575
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....
74. IQ is normally distributed with a mean of 100 and a standard deviation of 15....
74. 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. X ~ _____(_____,_____) Find the probability
that the person has an IQ greater than 120. Include a sketch of the
graph, and write a probability statement. MENSA is an organization
whose members have the top 2% of all IQs. Find the minimum IQ
needed to qualify for the MENSA organization. Sketch...
IQ Scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ Scores are normally distributed with a mean of 100 and a
standard deviation of 15. Use this information and a Z-table (or
calculator or Excel) to solve the following problems.
A. Ryan has an IQ score of 118. Calculate the z-score for Ryan's
IQ.
B. Interpret the z-score you obtained in the previous
problem.
C. Suppose an individual is selected at random. What is the
probability that their IQ score is less than 111? Round your answer
to four...
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...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Why am I getting this error using 000webhost , but I do not get this error...
- Why are FPGAs used over other programmable Devices such as the GAL chip?
- Examine the fiscal policies in place at the start of your specific time period of 2000-2010...
- Consider the given matrix (the top 250 rated movies according to IMDB). Consider a sample consist...
- What is the current level of income inequality in the United States? What do you think...
- Bakes A Lot, Inc., has $1,000 face value bonds outstanding. These bonds pay interest semi-annually, mature...
- Pick a Distributive System of any kind and ask yourself what is (are) being distributed? Write...
ADVERTISEMENT