Answer:
ikhjgvyiho
Step-by-step explanation:
Answer:
4:5
Step-by-step explanation:
because I already answer it when I am in grade6 and my answer is 4:5 and it's correct but I think it helps
Answer:
Therefore we fail to reject the Null hypothesis
Because the is no sufficient evidence to support the claim of the alternative hypothesis
Step-by-step explanation:
From the question we are told that
Sample size 
Mean time 1 
Mean time 2 
Standard deviation 
Standard deviation 
Level of significance 0.05
The null hypothesis is 
Alternative hypothesis 
Generally the test statistics is mathematically represented as




From Table the Z-critical value at 
Therefore
Zcal> Zcritical
(-0.43)=(-1.645)
Generally we fail to reject the null hypothesis
at 
Therefore we fail to reject the
Because the is no sufficient evidence to support the claim of 
Answer:
- -1/3
- not geometric
- -5
- 4
Step-by-step explanation:
You find the ratio of terms by dividing the second by the first. If the ratio is the same for all adjacent pairs of terms, it is a "common" ratio.
1) (2/3)/-2 = -1/3
(-2/9)/(2/3) = -1/3
(2/27)/(-2/9) = -1/3 . . . . . the common ratio is -1/3
___
2) 2/0 = undefined . . . . not a geometric sequence
___
3) -10/2 = -5
50/-10 = -5
-250/50 = -5 . . . . . the common ratio is -5
___
4) 4/1 = 4
16/4 = 4
64/16 = 4 . . . . . the common ratio is 4