Question

Intelligence quotients (IQs) are normally distributed with a mean of 100 and standard deviation of 15. Use the 68-95-99.7 Rule to determine the percentage of people with IQ below 70.

Group of answer choices

a. 95%

b. 2.5%

c. 68%

d. 5%

Answer #1

IQs are known to be normally distributed with mean 100 and
standard deviation 15. In a random sample of 37 people, find the
probability that the average IQ is between 96 and 103.

A psychologist finds that the intelligence quotients of a group
of patients are normally distributed, with a mean of 104 and a
standard deviation of 16. Find the percent of the patients with the
following IQs.
(a) above 116
%
(b) between 92 and 122

1. The scoring of the modern IQ tests is such that Intelligence
Quotients (IQs) have Normal distribution with µ = 100 and σ =
15.
a. Mensa International is a non profit organization that accepts
only people with IQ within the top 2%. What level of IQ qualifies
one to be a member of Mensa?

A) IQ is normally distributed with a mean of
100 and a standard deviation of 15
Suppose an individual is chosen at random:
MENSA is an organization whose members have IQs in the top 3%. What
is the minimum IQ you would need to qualify for membership? (round
to nearest whole number)
B) The height of men is a normally distrubuted
variable with a mean of 68 inches and a standard deviation of 3
inches. **Round answers to ONE decimal...

Suppose a normally distributed set of data has a mean of 193 and
a standard deviation of 13. Use the 68-95-99.7 Rule to determine
the percent of scores in the data set expected to be below a score
of 219. Give your answer as a percent and includeas many decimal
places as the 68-95-99.7 rule dictates. (For example, enter 99.7
instead of 0.997.)

Suppose baseball batting averages were normally distributed with
mean 250 and standard deviation 15. Using the approximate
EMPIRICAL RULE about what percentage of players
would have averages BETWEEN 220 and 235 ?
Question 6 options:
About 99.7%
About 97.5%
About 95%
About 84%
About 68%
About 47.5%
About 34%
About 20%
About 16%
About 13.5%
About 2.5%
Less than 1%
No Answer within 1% Given
Question 7 (1 point)
Suppose men's heights were normally distributed with mean 180
cm. and...

IQs of individuals are normally distributed with a mean of 100
and a standard deviation of 16.
If you sampled students at your college and assumed, as the null
hypothesis, that they had the same IQ as the population, then in a
random sample of size
(a) n = 25, find P(Y bar < 105)
(b) n = 100, find P(Y bar > 97)
(c) n = 144, find P(101< Y bar < 103)

IQ
scores are normally distributed with a mean of 100 and a standard
deviation of 15. Determine the 90th percentile for IQ scores

The distribution of young woman's height is normally distributed
with a mean of 65 inches and a standard deviation of 2.5 between
what height do 95% of young women fall and what percentage of young
women are shorter and 65
68-95-99.7 rule
The IQ score of seven graders normally distributed with a mean
of 111 standard deviation of 11 what percentage IQ score above 144
in a sample of 75 students in a rural school none had scored above
144...

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 15 minutes ago

asked 19 minutes ago

asked 31 minutes ago

asked 41 minutes ago

asked 47 minutes ago

asked 49 minutes ago

asked 53 minutes ago

asked 55 minutes ago

asked 57 minutes ago

asked 57 minutes ago

asked 1 hour ago