Answer:
No, 11/4 is a rational number
Answer:
0.9954
Step-by-step explanation:
For normal distribution z score is
=
Population proportion (p) = 0.060
Sample size (n) = 285
the standard error of proportion is
=
After putting the values into the above formula we will get
= 0.0141
Probability as the sample proportion will different from the population proportion by lower than the 4% that is
Probability = P(0.02<X<0.1) = P(-2.84<Z<2.84) = 0.9977 - 0.0023
= 0.9954
From the excel plotting, we see that the least square regression equation is given by:
m=(7.25-2.65)/(2009-1978)
m=0.15
thus the equation will be:
0.15(x-0)=y-2.65
y=0.15x-2.65
b] Using the equation we can approximate the hourly wage in 2025 as follows:
x=(2025-1978)=47
y=0.15(47)-2.65
y=7.05-2.65
y=4.4
The plot is as shown in the figure: