I need an explanation and analysis to answer the following based on the data set provided in the link below:

https://docs.google.com/spreadsheets/d/11-cdHmfjF_TJXd3JhMUbbwRBuitsxM_U/edit?usp=share_link&ouid=107894552960496070005&rtpof=true&sd=true

The objective is to analyze IBM employees' performance and see if higher education leads to higher income, job involvement impact the attrition rate, Employees promotion has a positive influence on job satisfaction level, and training frequency per year increase performance. Please include data analysis, two confidence intervals and two hypothesis testing, and a regression model to investigate the relationship between several employees' attributes, a table of correlations could be added.

Based on the outcomes recommendations should be made to decision-making process of allocating a dedicated budget to improve employees' performance and minimize attrition rates, thus maximizing IBM's profits.