Professors regularly give two versions of an exam. The professor may also provide summary statistics for...

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Professors regularly give two versions of an exam. The professor may also provide summary statistics for each version. Suppose the following summary is provided: Number of exams Mean Median SD Version A 53 65.4 72 16 Version B 65 66.5 71 17 A student who took Version A says that he should get an extra point because his exam was harder as evidenced by the lower mean score for Version A, as shown by the mean score. Does the student have a good argument? Pick the best answer below. We need to know the shape of the distribution for each version to determine if this argument is valid. Yes. Only 53 students took exam Version A while 65 students took exam Version B. No. The average scores are relatively close when considering the spread of the distributions. The difference might just be due to just chance. No. The median of Version A is higher. We need to know the minimum and the maximum for each version to determine if this argument is valid. Yes. The difference in the exam scores means that there is a difference in difficulty between the versions. Professors regularly give two versions of an exam. The professor may also provide summary statistics for each version. Suppose the following summary is provided: Number of exams Mean Median SD Version A 53 65.4 72 16 Version B 65 66.5 71 17 A student who took Version A says that he should get an extra point because his exam was harder as evidenced by the lower mean score for Version A, as shown by the mean score. Does the student have a good argument? Pick the best answer below. We need to know the shape of the distribution for each version to determine if this argument is valid. Yes. Only 53 students took exam Version A while 65 students took exam Version B. No. The average scores are relatively close when considering the spread of the distributions. The difference might just be due to just chance. No. The median of Version A is higher. We need to know the minimum and the maximum for each version to determine if this argument is valid. Yes. The difference in the exam scores means that there is a difference in difficulty between the versions.