Please Show full/clear Solutions for all the questions:

Chapter 7

1. 50 depressed children earn a depression score of 12 on the Children's Depression Inventory. The population mean for normally developing children is 6 (SD = 5). Is this sample's mean significantly different from the overall population mean?
2. 90 anxious college students earn an anxiety score of 30 on the State-Trait Anxiety Inventory. The population mean for non-anxious college students is 11 (SD = 4). Is this sample's mean significantly different from the population mean?
3. 100 Statistics students earn an exam score of 90 on their midterm. The population mean for all Statistics classes on campus is 84 (SD = 9). Is this sample's mean significantly different from the overall population mean?
4. 40 ADHD children earn an inattention score of 65 on the Child Behavior Checklist. The population mean for normally developing children is 55 (SD = 7). Is this sample's mean significantly different from the overall population mean?
5. 45 depressed adults earn a depression score of 16 on the Beck Depression Inventory. The population mean for the normal adult population is 5 (SD = 10). Is this sample's mean significantly different from the overall population mean?