017: The statistical decision is to fail to reject the null, and Ho is really fa
ID: 3366438 • Letter: 0
Question
017: The statistical decision is to fail to reject the null, and Ho is really false The following 14 questions (Q18 to 031) are based on the following example: preparation course score significantly different on the SAT than students who do not attend the (ie a Type Il error) 0.HO A researcher wants to determine whether high school students who attend an SAT preparation course. For those who do not attend the course, the population mean is 1050 (u sample standard deviation of 100. On the basis of these data, can the researcher conclude that the preparation course has a significant difference on SAT scores? Set alpha equal to.01 Calculate the 95% confidence interval Steps: 028: The mean you will use for this calculation is 1050 1150 029: What is the new critical value you will use for this calculation? Q30: As you know, two values will be required to complete the following equation: 031: Which of the following is a more accurate interpretation of the cont just computed? the confidence interval you A. We are 95% confident that the scores fall in the interval B. We are 95% confident that the average score on the SAT by the students who to took the prep course falls in the interval to C. We are 95% confident that the example above has correct values. D. We are 95% confident that the difference in SAT scores between the students who took the prep course and the students who did not falls in the interval toExplanation / Answer
Q28) Correct answer: 1150
i.e. sample mean
Q29) Critical value :
Critical t: ±2.9467
Q30) xbar - t(alpha) S / Sqrt(n) < Mu < xbar - t(alpha) S / Sqrt(n)
1150 - 2.9467*100/sqrt(16) < Mu < 1150 + 2.9467*100/sqrt(16)
1076.332 < µ < 1223.668
Q31)
Correct answer: option (B)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.