statstand1991
New member
- Joined
- May 8, 2013
- Messages
- 1
Can someone please help me with this? Which statistical procedure could I use, and how could I set this up?
20 males and 20 females reported the number of traffic violations they received in the last 8 years.
Females: 9, 1, 2, 4, 4, 3, 8, 8, 3, 2, 4, 8, 6, 7, 6, 5, 5, 5, 5, 5
Males: 10, 4, 6, 9, 8, 5, 5, 9, 3, 8, 8, 5, 3, 8, 7, 6, 7, 4, 8
The DMV is concerned that there has been an increase in traffic tickets in the last 8 years. Based on data collected continuously in the 8 years PRIOR to when the above data was collected, the average number of tickets was 2 with a standard deviation of 1. Using the data for both males and females combined (ignore gender), has there been a significant increase in the number of traffic tickets?
I was thinking maybe a one-sample z test, but I'm unsure because I do not know if the data for 8 years prior follows a normal distribution or what the N is.
Thank you.
20 males and 20 females reported the number of traffic violations they received in the last 8 years.
Females: 9, 1, 2, 4, 4, 3, 8, 8, 3, 2, 4, 8, 6, 7, 6, 5, 5, 5, 5, 5
Males: 10, 4, 6, 9, 8, 5, 5, 9, 3, 8, 8, 5, 3, 8, 7, 6, 7, 4, 8
The DMV is concerned that there has been an increase in traffic tickets in the last 8 years. Based on data collected continuously in the 8 years PRIOR to when the above data was collected, the average number of tickets was 2 with a standard deviation of 1. Using the data for both males and females combined (ignore gender), has there been a significant increase in the number of traffic tickets?
I was thinking maybe a one-sample z test, but I'm unsure because I do not know if the data for 8 years prior follows a normal distribution or what the N is.
Thank you.