A newspaper reports that teenagers on average talk 4 times on the phone per night. The headmaster of the school believes that this is too high. He samples 25 teenagers and gets an average of 3.4 calls per night with a standard deviation of 0.9 calls. I want to test this at a 99% confidence level...
2. ### Statistic subject test question

Hello everyone! Merry Christmas in advance! Here I just faced with a little issue of my son that I have no idea how to solve and he obviously neither. I just want to understand how to solve this tasks so I can explain to him and if you can help me I will be more than appreciated. The tasks are...
3. ### Which test should I run using SPSS ?

Question: Which (in) accuracy is the waist circumference (LEO) of a grown man be predicted based on its fat (VETP)? Which (in) accuracy of the waist circumference (LEO) of a mature man can be predicted based on the total energy consumption (EAVT)? --> Perform these analyzes for both...
4. ### Formula for prioritization

Hey guys, I hope you are all doing well. I have a quick question related to an applied research I need to make for my job. Basically, we have a team of 5 people and we are doing different tasks for customers based on the priority of the tasks. So we are having a random order every day (each one...