Typically, only very brave students are willing to speak out in a college classroom. Student participation may be especially difficult if the individual is from a different culture or country. The article “An Assessment of Class Participation by International Graduate Students” (Journal of College Student Development) considered a numerical “speaking-up” scale, with possible values from 3 to 15 (a low value means that a student rarely speaks). For a random sample of 64 males from Asian countries where English is not the official language, the sample mean and standard deviation were 8.75 and 2.57, respectively. Suppose that the mean for the population of all males having English as their native language is 10 (suggested by data in the article). We want to find whether the population mean for males from non-English speaking Asian countries is smaller than 10. A) State the sign of the alternative hypothesis. _________________ (type one of these 3 choices: greater than, less than, or not equal) B) Calculate the test statistic for the test above. (round test statistic to 2 decimal places) _________________ C) What is the cutoff for the rejection region for this test? Use significance level 0.05 (round to 2 decimal places) _______________ D) What's your decision on the hypothesis test above? Use significance level 0.05. (type Reject for Reject Ho, type FTR for Fail to Reject Ho) _______________
Typically, only very brave students are willing to speak out in a college classroom. Student participation may be especially difficult if the individual is from a different culture or country. The article “An Assessment of Class Participation by International Graduate Students” (Journal of College Student Development) considered a numerical “speaking-up” scale, with possible values from 3 to 15 (a low value means that a student rarely speaks). For a random sample of 64 males from Asian countries where English is not the official language, the sample mean and standard deviation were 8.75 and 2.57, respectively. Suppose that the mean for the population of all males having English as their native language is 10 (suggested by data in the article). We want to find whether the population mean for males from non-English speaking Asian countries is smaller than 10.
A) State the sign of the alternative hypothesis. _________________
(type one of these 3 choices: greater than, less than, or not equal)
B) Calculate the test statistic for the test above. (round test statistic to 2 decimal places) _________________
C) What is the cutoff for the rejection region for this test? Use significance level 0.05 (round to 2 decimal places) _______________
D) What's your decision on the hypothesis test above? Use significance level 0.05.
(type Reject for Reject Ho, type FTR for Fail to Reject Ho) _______________
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