Assignment 8

1) Satisfaction level

## 
##  Welch Two Sample t-test
## 
## data:  satisfaction_level by left
## t = 46.636, df = 5167, p-value < 2.2e-16
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
##  0.2171815 0.2362417
## sample estimates:
## mean in group 0 mean in group 1 
##       0.6668096       0.4400980

Technical: The P-Val is much smaller than .01 therefore we reject the null hypothesis and acknowledge the signifigant different in mean values.

Non-Technical: Employees With a higher satisfaction are less likely to leave

2) Last Evaluation

## 
##  Welch Two Sample t-test
## 
## data:  last_evaluation by left
## t = -0.72534, df = 5154.9, p-value = 0.4683
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
##  -0.009772224  0.004493874
## sample estimates:
## mean in group 0 mean in group 1 
##       0.7154734       0.7181126

Technical: The P-Val is >.01 therefore we accept null hypothesis and the fact there is no signifigant difference in the means between the two groups

Non-Technical: Employees Last Evaluation Has No Signifigant Impact On If They Stay Or Leave

3) Avg Monthly Hours

## 
##  Welch Two Sample t-test
## 
## data:  average_montly_hours by left
## t = -7.5323, df = 4875.1, p-value = 5.907e-14
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
##  -10.534631  -6.183384
## sample estimates:
## mean in group 0 mean in group 1 
##        199.0602        207.4192

Technical: The P-val is much smaller than .01 therefore we reject null hypothesis and acknowledge the signifigant difference in means between the two groups

Non-Technical: The More Hours the Employee Works The More Likely They Are To Leave

4) Number of Projects

## 
##  Welch Two Sample t-test
## 
## data:  number_project by left
## t = -2.1663, df = 4236.5, p-value = 0.03034
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
##  -0.131136535 -0.006540119
## sample estimates:
## mean in group 0 mean in group 1 
##        3.786664        3.855503

Technical: P-Val > .01 therefore we accep null hypothesis and acknowledge that there is no signifigant difference in the mean/ values of the groups

Non-Technical: The Number Of Projects Worked by Employees Does Not Affect if They Leave Or Not