• The results of a common standardized test used in psychology research is designed so that the population mean is 135 and the standard deviation is 10. A subject earns a score of 109. What is the z-score for this raw score?
• The time it takes me to wash the dishes is uniformly distributed between 6 minutes and 14 minutes. What is the probability that washing dishes tonight will take me between 12 and 13 minutes? Give your answer accurate to two decimal places.
  

Here is a sample data set that appears to be nearly normal (as suggested by the histogram). Frequency 35 40 45 50 55 60 65 70 75 length (cm) Q What is the mean ofthis data set? (Report answer using the rules suggested in class: 1 more d.p. than the data.) M2: What is the standard deviation of this data set? (Report answer using the rules suggested in class: 2 more d.p. than the data.) What is the maximum of this data set? What is the z-score of the maximum in this data set? (Report answer accurate to 3 decimal places with appropriate rounding. ALSO REMEMBER it is best to use the unrounded M and SD for this calculation, not the values reported above.) Is the maximum an outlier in this data set? :l