Question
In: Statistics and Probability
Northwood and Eastwood are rival schools that wish to compare how their students did in a...
Northwood and Eastwood are rival schools that wish to compare
how their students did in a math competition. 72 randomly chosen
Northwood students participated and received a mean score of 28
with a standard deviation of 8, 98 randomly chosen Eastwood
students participated and received a mean score of 25 with a
standard deviation of 10.
(a) The Eastwood math teacher wants to show through statistics that
her students receive a higher mean score in the contest. State her
hypotheses.
(b) Compute the test statistic and p-value for this test.
(c) Reach your conclusion at the 0.05 significance level. Be sure to
interpret in the context of the problem.
(d) In a separate test, the Eastwood teacher finds evidence that
Eastwood students performed better than Southwood students. Would
this prove that the Eastwood teacher was more effective than the
Southwood teacher? Explain briefly.
Solutions
orchestra answered 1 year agoRelated Solutions
Northwood and Eastwood are rival schools that wish to compare how their students did in a...
Northwood and Eastwood are rival schools that wish to compare
how their students did in a math competition. 72 randomly chosen
Northwood students participated and received a mean score of 28
with a standard deviation of 8, 98 randomly chosen Eastwood
students participated and received a mean score of 25 with a
standard deviation of 10.
a) The Eastwood math teacher wants to show through statistics
that her students receive a higher mean score in the contest. State
her hypotheses....
Northwood and Eastwood are rival schools that wish to compare how their students did in a...
Northwood and Eastwood are rival schools that wish to compare
how their students did in a math competition. 72 randomly chosen
Northwood students participated and received a mean score of 28
with a standard deviation of 8, 98 randomly chosen Eastwood
students participated and received a mean score of 25 with a
standard deviation of 10.
(a) The Eastwood math teacher wants to show through statistics
that her students receive a higher mean score in the contest. State
her hypotheses....
Northwood and Eastwood are rival schools that wish to compare how their students did in a...
Northwood and Eastwood are rival schools that wish to compare
how their students did in a math competition. 72 randomly chosen
Northwood students participated and received a mean score of 28
with a standard deviation of 8, 98 randomly chosen Eastwood
students participated and received a mean score of 25 with a
standard deviation of 10.
-I got the test statistic, but get lost when calculating the
p-value and the degrees of freedom.
(a) The Eastwood math teacher wants to...
Northwood and Eastwood are rival schools that wish to compare how their students did in a...
Northwood and Eastwood are rival schools that wish to compare
how their students did in a math competition. 72 randomly chosen
Northwood students participated and received a mean score of 28
with a standard deviation of 8, 98 randomly chosen Eastwood
students participated and received a mean score of 25 with a
standard deviation of 10.
(a) The Eastwood math teacher wants to show through statistics
that her students receive a higher mean score in the contest. State
her hypotheses....
New York wants to do a study to compare students at two different schools in the...
New York wants to do a study to compare students at two
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thousand dollars a year. They ask each student the same question
“Do you feel that your college is worth the tuition you pay...
New York wants to do a study to compare students at two different schools in the...
New York wants to do a study to compare students at two
different schools in the city to see if student’s feelings about
college are influenced by their tuition. The city takes a sample of
100 students from Barnard college whose tuition is 60 thousand
dollars a year and 200 from Lehman College whose tuition is 15
thousand dollars a year. The ask each student the same question “Do
you feel that your college is worth the tuition you pay...
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Two statistics professors at two rival schools decide to use IQ
scores as a measure of how smart the students at their respective
schools are. IQ scores are known to be Normally distributed. The
two professors will use this knowledge to their advantage. They
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determine the students' IQ scores by means of the standard IQ test.
The two professors will use the pooled version of the two-sample
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