The following 14 questions (018 to 03) are based on the following example: A res

Question

The following 14 questions (018 to 03) are based on the following example: A researcher wants to determine whether high school students who attend an SAI preparation course score significantly different on the SAT than students who do not atten preparation course. For those who do not attend the course, the population mean 1050). The 16 students who attend the preparation course average 1150 on t he SAT, with ation of 100. On the basis of these data, can the researcher conclude t tend the course, the population mearn le standard devi preparation course has a significant difference on SAT scores? Set alpha equal to .01

Explanation / Answer

Q22. Critical t: ±2.9467

Q23. Standard Error = SE = 100 / sqrt(16) = 25

Q24. t - value = (sample mean-population mean ) / SE = (1150 - 1050) / 25 = 4

Q25. Here t vaue is not in t critical value so we reject H0

correct answer: Option (A) Reject the null hypothesis

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