Mathematics, 26.02.2020 05:46 erikpaynee8622
Answers to this question will be "increase", "decrease", "stay the same" or "not enough information."
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...
1- 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.)
2- What happens to the z score of a person in sample 2 with a raw score of 205, compared to their original z score? (Assume z scores are only calculated on sample 2, and that the ‘before’ and ‘after’ calculations were done separately, using only the appropriate data.)
3- What happens to the z score of a person who originally had the second highest score in sample 2, compared to their original z score? (Assume z scores are only calculated on sample 2, and that the ‘before’ and ‘after’ calculations were done separately, using only the appropriate data.)
4- What happens to the standard deviation of all z scores for sample 1, compared to the original standard deviation of all z scores for sample 1? (Assume z scores are only calculated on sample 1, and that the ‘before’ and ‘after’ calculations were done separately, using only the appropriate data.)
5- What happens to the value of the z score of the person who was moved from sample 2 to sample 1? (Assume z scores are calculated on each sample separately (i. e., on sample 2 before and on sample 1 after the data point is moved), using only the appropriate data.)
Answers: 1
Mathematics, 21.06.2019 16:30
Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.
Answers: 1
Mathematics, 21.06.2019 17:40
Which number produces a rationale number when multiplied by 1/5
Answers: 1
Mathematics, 21.06.2019 23:00
During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss
Answers: 2
Answers to this question will be "increase", "decrease", "stay the same" or "not enough information....
Computers and Technology, 27.09.2019 14:00
Mathematics, 27.09.2019 14:00
Mathematics, 27.09.2019 14:00
Spanish, 27.09.2019 14:00
Mathematics, 27.09.2019 14:00
English, 27.09.2019 14:00
Mathematics, 27.09.2019 14:00
History, 27.09.2019 14:00
History, 27.09.2019 14:00
Computers and Technology, 27.09.2019 14:00