The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 503 534 517 634 526 554 394 566 531 572 594 481 448 592 469
The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 503 534 517 634 526 554 394 566 531 572 594 481 448 592 469
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree.
College Grads
485 | 503 |
534 | 517 |
634 | 526 |
554 | 394 |
566 | 531 |
572 | 594 |
481 | 448 |
592 | 469 |
High School Grads
442 | 492 |
580 | 478 |
479 | 425 |
486 | 485 |
528 | 390 |
524 | 535 |
(a)
Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that students show a higher population mean math score on the SAT if their parents attained a higher level of education. (Let ?1 = population mean verbal score of students whose parents are college graduates with a bachelor's degree and ?2 = population mean verbal score of students whose parents are high school graduates but do not have a college degree.)
A) H0: ?1 − ?2 = 0
Ha: ?1 − ?2 ≠ 0
B) H0: ?1 − ?2 ≠ 0
Ha: ?1 − ?2 = 0
C)H0: ?1 − ?2 ≤ 0
Ha: ?1 − ?2 > 0
D) H0: ?1 − ?2 < 0
Ha: ?1 − ?2 = 0
E) H0: ?1 − ?2 ≥ 0
Ha: ?1 − ?2 < 0
(b)
What is the point estimate of the difference between the means for the two populations?
_________
(c)
Find the value of the test statistic. (Round your answer to three decimal places.)
________
Compute the p-value for the hypothesis test. (Round your answer to four decimal places.)
p-value = ______
(d)
At
? = 0.05,
what is your conclusion?A)Do not reject H0. There is insufficient evidence to conclude that higher population mean verbal scores are associated with students whose parents are college graduates.
B) Reject H0. There is insufficient evidence to conclude that higher population mean verbal scores are associated with students whose parents are college graduates.
C) Reject H0. There is sufficient evidence to conclude that higher population mean verbal scores are associated with students whose parents are college graduates.
D) Do not Reject H0. There is sufficient evidence to conclude that higher population mean verbal scores are associated with students whose parents are college graduates.
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