Often with regrouping of 2 numbers then counting them once all together
Answer:
a. 4.05 b. 3.84 c. 1.2475 and 1.1344 d. 1.1169 and 1.0651 e. We can say that the overall job satistaction of senior executives and middle managers is about 4; however, there is more variability in the job satisfaction for senior executives than in the job satisfaction for middle managers.
Step-by-step explanation:
a. (1)(0.05)+(2)(0.09)+(3)(0.03)+(4)(0.42)+(5)(0.41) = 4.05
b. (1)(0.04)+(2)(0.1)+(3)(0.12)+(4)(0.46)+(5)(0.28) = 3.84
c. We compute the variances as follow:
= 1.2475 and
= 1.1344
d. The standard deviation is the squared root of the variance, therefore, we have
and
e. The expected value of the job satisfaction score for senior executives is very similar to the job satisfaction score for middle managers. We can say that the overall job satistaction of senior executives and middle managers is about 4; however, there is more variability in the job satisfaction for senior executives than in the job satisfaction for middle managers.
Answer:
1/5, left (negative)
Step-by-step explanation:
We start at 1/5 and because of the negative sign we move 4/5 to the left or negative direction.
Answer:
Highest received is by department Y
Step-by-step explanation:
Given that the research funds of a certain company were divided among three departments, X, Y, and Z.
The research funds received by departments X and Y were in the ratio 3 to 5, respectively.
The research funds received by departments X and Z were in the ratio 2 to 1, respectively
X:Y = 3:5
X:Z = 2:1
X is common in both the equations so let us take lcd for 3 and 2 = 6
Multiply I equation by 2 and II equation by 3
X:Y = 6:10
X: Z = 6:3
Since X has the same numerical value we can combine these two tog et
X:Y: Z =6:10:3
Highest received is by department Y