Answer:
The training does reduce response time at 0.05 level of significance
Step-by-step explanation:
Population mean for a population with normal distribution, where the standard deviation is known and the appropriate significant test is given then;
z=x-μ / δ/√n
where
μ= 9 minutes
x=8 minutes
δ= 4.2
n= 36
Applying the formula;
z= 8-9 / 4.2/√36
z= -1 / 4.2/6
z= -1 /0.7 = - 1.429
Perform the test where
H₀ : p=0.05 verse Ha : p < 0.05
Using the Z-table, find the probability that Z is less than -1.43.
You will find the probability of 0.0764 of Z being more than the value in test thus; there are high chances that results will be observed according to the null hypothesis
For rectangles the area is length (l) times width (w)
so you would do 25 x 8 which equals 200
area= 200 feet
A principal invested for n number of years increases as the equation projects F = P * (1+ i) ^n where F is the future worth, p is the present worth or principal and i is the interest rate. substituting, F = $1600 * (1+ 0.07/2) ^33*2 equal to amount of future worth or balance of $15494.70
Answer:
g(x)=x^2 - 14x+44
Step-by-step explanation:
f(x)=x^2-5,
g(x)=f(x-7)=(x-7)^2-5=
x^2 - 2*x*7+7^2 - 5=
x^2 - 14x+49-5=
x^2 - 14x+44