The results of a common standardized test used in psychology research is designed so that the population mean is 105 and the standard deviation is 20. A subject earns a score of 99. What is the Z-score for this raw score? Z-Score =

The results of a common standardized test used in psychology research is designed so that the population mean is 175 and the standard deviation is 40. A subject earns a score of 159. What is the z-score for this raw score?z-score =

A basketball coach kept stats for his team in free throw percentage and steals (among others). At the last game, Erin’s free throw percentage was 79% and she had 4 steals. The team averaged 90% from the free throw line with a standard deviation of 12% and they averaged 5 steals with a standard deviation of 4. In which category did Erin do better compared with her team? Explain using z-score.

An IQ test has a mean of 100 and a standard deviation of 15. An elite engineering company wants to hire only people who score in the top5% of all scores on the IQ test. Find the score an engineer needs to scoreabove to have a chance to work for the elite engineering company? please show work

A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what percentage of students spend less than 12 hours in class?

What is difference between the Differences between Mean and Median?

Can the standard deviation of a data set be zero?

Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.

The results of a common standardized test used in psychology research is designed so that the population mean is 100 and the standard deviation is 20. A subject earns a score of 84. What is the z-score for this raw score?z-score =

Please provide solution