6+6
8+4
9+3
10+2
11+1
Hope this helps!
Answer:
x=13i, -13i
Step-by-step explanation:
Take the square root of both sides which gives you plus or minus the square root of -169. Then you get plus or minus 13times the square root of negative 1. Now you can say that x equals positive or negative 13i
Answer:
We conclude that there is not enough evidence to support the claim compute technique performs differently than the traditional method.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 101 hours
Sample mean, =100 hours
Sample size, n = 140
Alpha, α = 0.01
Population standard deviation, σ = 6 hours
First, we design the null and the alternate hypothesis
We use Two-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
The calculated z statistic lies in the acceptance region, we fail to reject the null hypothesis and accept it.
We conclude that there is not enough evidence to support the claim that compute technique performs differently than the traditional method.