Question
In: Statistics and Probability
A statistics professor at a large university hypothesizes that students who take statistics in the morning...
A statistics professor at a large university hypothesizes that students who take statistics in the morning typically do better than those who take it in the afternoon. He takes a random sample of 36 students who took a morning class and, independently, another random sample of 36 students who took an afternoon class. He finds that the morning group scored an average of 72 with a standard deviation of 8, while the evening group scored an average of 68 with a standard deviation of 10. The population standard deviation of scores is unknown but is assumed to be equal for morning and evening classes. Let µ1 and µ2 represent the population mean final exam scores of statistics' courses offered in the morning and the afternoon, respectively. Compute the appropriate test statistic to analyze the claim at the 1% significance level.
Solutions
orchestra answered 1 year agoRelated Solutions
Each year about 1500 students take the introductory statistics course at a large university. This year...
Each year about 1500 students take the introductory statistics
course at a large university. This year scores on the final exam
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b.Would...
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Number of hours studying per week for
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A professor who teaches a large introductory statistics class (197 students) with eight discussion sections would...
A professor who teaches a large introductory statistics class
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Sec 1
Sec 2
Sec 3
Sec 4
Sec 5
Sec 6
Sec 7
Sec 8
ni...
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In a large introductory statistics lecture hall, the professor reports that 53% of the students enrolled...
In a large introductory statistics lecture hall, the professor
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Dan believes the success rate of students who take a morning
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passing grades.
What is H0:
What is Ha:
What is the p-value? Round answer to three decimal places (i.e.
0.123)? Answer
At a level of significance (alpha) of 0.05, what is your...
Students enrolled in an introductory statistics course at a university were asked to take a survey...
Students enrolled in an introductory statistics course at a
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indicated a visual learner, and positive scores indicated a verbal
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student’s inclination toward that learning style. A score of 0
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Students enrolled in an introductory statistics course at a university were asked to take a survey...
Students enrolled in an introductory statistics course at a
university were asked to take a survey that indicated whether the
student’s learning style was more visual or verbal. Each student
received a numerical score ranging from -11 to +11. Negative scores
indicated a visual learner, and positive scores indicated a verbal
learner. The closer the score was to -11 or +11, the stronger the
student’s inclination toward that learning style. A score of 0
would indicate neutrality between visual or...
Students enrolled in an introductory statistics course at a university were asked to take a survey...
Students enrolled in an introductory statistics course at a
university were asked to take a survey that indicated whether the
student’s learning style was more visual or verbal. Each student
received a numerical score ranging from -11 to +11. Negative scores
indicated a visual learner, and positive scores indicated a verbal
learner. The closer the score was to -11 or +11, the stronger the
student’s inclination toward that learning style. A score of 0
would indicate neutrality between visual or...
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