A study about the college aptitude of seniors at North City High School has resu

Question

A study about the college aptitude of seniors at North City High School has resulted in a sample mean with a corresponding z-score of -2.00. If the critical value for the region of rejection is plusminus1.96, what is the correct conclusion? a. Since the z-value falls within the region of rejection, we should conclude this sample mean likely represents some other population. b. Since the z-value does not fall within the region of rejection, we should not conclude this sample mean represents some other population. c. Since the z-value falls within the region of rejection, we should not conclude this sample mean represents some other population. d. Since the z-value does not fall within the region of rejection, we should conclude this sample mean likely represents some other population. 12. When does sampling error occur? a. When a sample statistic is not equal to the population parameter as a result of nonchance factors b. When a sample statistic is not equal to the population parameter as a result of chance factors c. When there has been an error in calculating the standard error of the mean d. When there has been an error in calculating the sample mean

Explanation / Answer

Answer (11)

Correct Alternative: (a)

Answer (12)

Correct Alternative: (b)

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