Question

Five years ago, the average math SAT score for students at one school was 475. A teacher wants to perform a hypothesis test to determine whether the mean math SAT score of students at the school has improved. The mean math SAT score for a random sample of 40 students from this school is 469 with a standard deviation of 73. Do the data provide sufficient evidence to conclude that the mean math SAT score for students at the school has improved from the previous mean of 475? Perform the appropriate hypothesis test using a significance level of 10% using the critical value method. Be sure to show all six steps, including interpreting your answer within the context of the problem.

Answer #1

TOPIC:One sample t-test for population mean.

For all U.S. students nationally who take the SAT, the average
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A random sample of 10 students entering Whitmer College had an
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students is different than the national mean SAT-M score. Based on
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a. Write down the...

For all U.S. students nationally who take the SAT, SAT Math
scores are normally distributed with an average score of 500 for
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have a mean SAT Math score of 507 while the students who did not
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The College Board provided comparisons of Scholastic Aptitude
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false?
Score Mean Standard Deviation Critical Reading 521 495 116 Math
535 511 120
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A certain test preparation course is designed to improve
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(a) Does this mean that the test scores were better on average
in states where fewer a lower...

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