Question
In: Statistics and Probability
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with...
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.62 and a standard deviation of 0.43. Using the empirical rule, what percentage of the students have grade point averages that are at least 1.76? Please do not round your answer.
Solutions
orchestra answered 1 year agoRelated Solutions
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with...
Suppose that grade point averages of undergraduate students at
one university have a bell-shaped distribution with a mean of 2.61
and a standard deviation of 0.39. Using the empirical rule, what
percentage of the students have grade point averages that are
between 1.83 and 3.39?
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with...
Suppose that grade point averages of undergraduate students at
one university have a bell-shaped distribution with a mean of
2.612.61 and a standard deviation of 0.390.39. Using the empirical
rule, what percentage of the students have grade point averages
that are between 1.831.83 and 3.393.39?
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with...
Suppose that grade point averages of undergraduate students at
one university have a bell-shaped distribution with a mean of 2.52
and a standard deviation of 0.43. Using the empirical rule, what
percentage of the students have grade point averages that are
between 1.23 and 3.81?
The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year...
The undergraduate grade point averages (UGPA) of students
taking an admissions test in a recent year can be approximated by a
normal distribution, as shown in the figure. (a) What is the
minimum UGPA that would still place a student in the top 15% of
UGPAs? (b) Between what two values does the middle 50% of the
UGPAs lie? mean=3.24 SD=0.21
The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year...
The undergraduate grade point averages (UGPA) of students
taking an admissions test in a recent year can be approximated by a
normal distribution, as shown in the figure. (a) What is the
minimum UGPA that would still place a student in the top 15% of
UGPAs? (b) Between what two values does the middle 50% of the
UGPAslie? mean- 3.28 Standard deviation- 0.17 A normal curve
labeled mu = 3.28 and sigma = 0.17 is over a horizontal x-axis
labeled...
The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year...
The undergraduate grade point averages (UGPA) of students
taking an admissions test in a recent year can be approximated by a
normal distribution, as shown in the figure. (a) What is the
minimum UGPA that would still place a student in the top 10% of
UGPAs? (b) Between what two values does the middle 50% of the
UGPAs lie? u=3.32, o= 0.16
The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year...
The undergraduate grade point averages (UGPA) of students
taking an admissions test in a recent year can be approximated by a
normal distribution, as shown in the figure.
(a) What is the minimum UGPA that would still place a student in
the top
55%
of UGPAs?(b) Between what two values does the middle
5050%
of the UGPAs lie?
3.3842.76Grade point
average
mu equals 3.38μ=3.38
sigma equals 0.19σ=0.19
x
Grade point averages of students on a large campus follow a normal distribution with a mean...
Grade point averages of students on a large campus follow a
normal distribution with a mean of 2.6 and a standard deviation of
0.5. d) A random sample of 400 students is chosen from this campus.
what is the probability that at least 80 of these students have
grade point averages higher than 3.0? e) Two students are chosen at
random from this campus. what is the probability that at least one
of them has a grade point average higher...
Below are the grade point averages for 24 randomly chosen university business students during a recent...
Below are the grade point averages for 24 randomly chosen
university business students during a recent semester.
a) Is there sufficient evidence to indicate that the variances
for the four classifications of students are not the same? Assume
alpha is 0.05.
b) What is the p-value for this problem? Explain its meaning in
words.
c) Is there sufficient evidence to indicate that the means for
the four classifications of students are not the same? Use alpha =
0.05.
d) If...
Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.42...
Suppose that shoe sizes of American women have a bell-shaped
distribution with a mean of 8.42 and a standard deviation of 1.52.
Using the empirical rule, what percentage of American women have
shoe sizes that are at least 9.94? Please do not round your
answer.
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