Answer:
The 99% confidence interval for the mean paper products recycled per person per day for the population of Dallas is
Step-by-step explanation:
From the question we are told that
The sample size is n = 20
The sample mean is
The standard deviation is
Generally given that the sample size is small , n< 30 we will be making use of t distribution table
Generally the degree of freedom is mathematically represented as
=>
From the question we are told the confidence level is 99% , hence the level of significance is
=>
Generally from the t distribution table the critical value of at a degree of freedom of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 99% confidence interval is mathematically represented as
=>
=>
Answer:
a .8
b .03
c .125
d 125.0
Step-by-step explanation:
Percent means parts out of 100
6%=6/100=3/50
mixed numers are normally greater than 1, this isn't so it is simply
6/100 or 3/50
Answer:
Given
f(x) = 2x+7
g(x) = x^2-4
h(x) = 5x
a. 4h(x)
= 4 * 5x
= 20x
b. f(x) - g(x)
f(x) - g(x) = 2x + 7 - (x^2 - 4)
= 2x+7-x^2+4
=-x^2+2x+7+4
=-x^2+2x+11
c. f(g(x)) = 2(g(x))+7
=2(x^2-4) +7
=2x^2-8+7
=2x^2-1
d. g(x)h(x) = (x^2-4)(5x)
= 5x^3 - 20x
e. g(x) / f(x) = x2 - 4/ 2x + 7