Answer:
The value of the test statistic is -1.53
Step-by-step explanation:
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 96 hours
Sample mean,
= 95 hours
Sample size, n = 150
Alpha, α = 0.05
Population standard deviation, σ = 8 hours
Formula:
Putting all the values, we have
Thus, the value of the test statistic is -1.53
Answer:

Step-by-step explanation:
Given
x ----- y
0.5. --- 0.8
1. --- 1.6
3.--- 4.8
25. --- 40
Required
Determine the constant of proportionality
This can be calculated using the following formula:
; Where r is the constant of proportionality;
Solve for r

When x = 0.5; y = 0.8


When x = 1; y =1.6


When x = 3; y = 4.8


When x = 25; y = 40


Notice that the value of r is constant throughout;
Hence:

Answer:
x=(-2)
Step-by-step explanation:
subtract 4x from 2x
-6+7=1 4-2=2 subtract 1 from 2
-2x=1 x=-2