Rori is observing elite marching bands as part of her dissertation study. She is particularly interested in drum major leadership styles and behavior. She has found that the drum major at her current research site is very interested in showing off for her. This is an example of:

a. response bias.
b. researcher bias.
c. sampling bias.
d. instrumentation bias.

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%