Answer:
C
Step-by-step explanation:
I an augmented matrix, the coefficients for the variables come first and then the answer
4 -2 5
5 -1 8
Answer:
Step-by-step explanation:
From the information given :
The null hypothesis 
The alternative hypothesis 
Given that:
the sample size n = 21
sample standard deviation s = 68
population standard deviation σ = 60
a) The level of significance 
b) The chi-square statistics can be calculated as:




The degree of freedom is :
= n - 1
= 21 - 1
= 20
Answer:
x = 0, -2
Step-by-step explanation:
Just take my word for it.
Answer:
55
Step-by-step explanation:
50 odd numbers and 3 even square numbers
(−∞,∞) will be the answer