orangeicecream

03.03.2021 • 

Mathematics

Assume you have two normally distributed samples, each with a sample size of 70. The Mean (StDev) of samples 1 and 2, respectively, are 300 (15) and 210 (8). Every single score in the first sample is higher than every score in the second sample. Assume all scores are whole numbers. If the highest score in the second sample is moved to the first sample... What happens to the value of the z score of the new mean of sample 1, compared to the value of the z score of the old mean of sample 1 (before the one score was moved from sample 2)? (Assume z scores are only calculated on sample 1, and that the ‘before’ and ‘after’ calculations were done separately, using only the appropriate data.)

Increase
Decrease
Stay The Same
Not Enough Information

Ответ:

ahmedeldyame

03.05.2022

Mathematics

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1

1,2,1

1,3,3,1

1,4,6,4,1

1,5,10,10,5,1

1,6,15,20,15,6,1

1,7,21,35,35,21,7,1

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