Question
In: Statistics and Probability
The national average SAT score (for verbal & math) is 1028. Suppose nothing is known about...
The national average SAT score (for verbal & math) is 1028. Suppose nothing is known about the distribution of individual SAT scores, but it is known that the standard deviation of these scores is 100. If a random sample of 200 scores were selected and the sample mean was calculated to be 1050, would this be surprising? If so, why? If not, why not?
Solutions
orchestra answered 2 years agoRelated Solutions
The national average SAT score (for verbal and math) is 1028 . Suppose that nothing is...
The national average SAT score (for verbal and math) is
1028
. Suppose that nothing is known about the shape of the
distribution and that the standard deviation is
100
. Round the final answer to at least four decimal places and
intermediate
z
-value calculations to two decimal places.
1.If a random sample of
205
scores was selected, find the probability that the sample mean
is greater than
1044
. Assume that the sample is taken from a large...
Math SAT Scores (Raw Data, Software Required): Suppose the national mean SAT score in mathematics is...
Math SAT Scores (Raw Data, Software
Required):
Suppose the national mean SAT score in mathematics is 520. The
scores from a random sample of 40 graduates from Stevens High are
given in the table below. Use this data to test the claim that the
mean SAT score for all Stevens High graduates is the same as the
national average. Test this claim at the 0.10 significance
level
(a) What type of test is
this?
This is a left-tailed test.This is...
Math SAT Scores (Raw Data, Software Required): Suppose the national mean SAT score in mathematics is...
Math SAT Scores (Raw Data, Software
Required):
Suppose the national mean SAT score in mathematics is 520. The
scores from a random sample of 40 graduates from Stevens High are
given in the table below. Use this data to test the claim that the
mean SAT score for all Stevens High graduates is the same as the
national average. Test this claim at the 0.10 significance
level.
(a) What type of test is this?
This is a left-tailed test.
This...
Suppose that the national average for the math portion of the College Board's SAT is 548....
Suppose that the national average for the math portion of the
College Board's SAT is 548. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores.
If required, round your answers to two decimal places.
(a)
What percentage of students have an SAT math score greater than
648?
%
(b)
What percentage of students have an SAT...
1. Suppose that the national average for the math portion of the College Board's SAT is...
1. Suppose that the national average for the math portion of the
College Board's SAT is 528. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores.
If required, round your answers to two decimal places. If your
answer is negative use “minus sign”.
(a)
What percentage of students have an SAT math score greater than
628?...
Suppose that the national average for the math portion of the College Board's SAT is 535....
Suppose that the national average for the math portion of the
College Board's SAT is 535. The College Board periodically rescales
the test scores such that the standard deviation is approximately
75. Answer the following questions using a bell-shaped distribution
and the empirical rule for the math test scores. If required, round
your answers to two decimal places.
(a) What percentage of students have an SAT math score greater
than 610? ______%
(b) What percentage of students have an SAT...
Suppose that the national average for the math portion of the College Board's SAT is 516....
Suppose that the national average for the math portion of the
College Board's SAT is 516. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores.
If required, round your answers to two decimal places.
(a)
What percentage of students have an
SAT math score greater than 616?
%
(b)
What percentage of students have an
SAT...
Suppose that the national average for the math portion of the College Board's SAT is 531....
Suppose that the national average for the math portion of the
College Board's SAT is 531. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores. If
required, round your answers to two decimal places.
(a) What percentage of students have an SAT math score greater
than 631?
(b) What percentage of students have an SAT math...
Suppose that the national average for the math portion of the College Board's SAT is 520....
Suppose that the national average for the math portion of the
College Board's SAT is 520. The College Board periodically rescales
the test scores such that the standard deviation is approximately
75. Answer the following questions using a bell-shaped distribution
and the empirical rule for the math test scores. If required, round
your answers to two decimal places.
(a) What percentage of students have an SAT math score greater
than 595?
(b) What percentage of students have an SAT math...
Suppose that the national average for the math portion of the College Board's SAT is 538....
Suppose that the national average for the math portion of the
College Board's SAT is 538. The College Board periodically rescales
the test scores such that the standard deviation is approximately
100. Answer the following questions using a bell-shaped
distribution and the empirical rule for the math test scores.
If required, round your answers to two decimal places.
(a)
What percentage of students have an SAT math score greater than
638?
%
(b)
What percentage of students have an SAT...
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