Mathematics Homework Help

Round all answers to the hundreth place.

Question 2. Find the mean, median and mode of these numbers: 9, 10, 9, 9, 11, 9, 10, 9, 9, 10

Round all answers to the hundreth place.

Question 3:

3B

Over the past decade, ABC Manufacturing has increased the number of safety inspections per month in hopes to decrease the number accidents on their production line. Below is a list of how many inspections were conducted in a month and the corresponding number of accidents recorded. Is there a correlation, and has this leadership decision been effective?

Question 4:

A department chair in an academic department wanted to know if there was a difference between spring and fall enrollment in his department. The department offered the same six courses both semesters. What test should he conduct to determine if there is a significant difference in the enrollment between the semesters? Write up the results and determine what do the results mean?

Here is the data set:

Question 5:

A superintendent wanted to know if there was a difference among staff retention at elementary, middle, and high schools in her district. Here are the data:

What test should she conduct to determine if there is a difference among the levels? What do the results mean? Please write up your results according to the handbook and describe any follow up or additional statistical analysis, if necessary.