Answer: c. P=43
d. P=3x^2+5x+8
Step-by-step explanation:
c. P=12x+19 ==> See how I got this formula in my previous answer to parts a and b
P=12(2)+19
P=24+19
P=43
d. P=a+b+c+d
P=x^2 +4x+8+2x^2 +x
P=x^2 +2x^2 +4x+x+8
P=3x^2+5x+8
Options :
a) np ≥ 10
b) n(1-p ) ≥ 10
c) n ≥ 30
d) The data is a random sample from the population of interest.
e) The sample is less than 10% of the population.
Answer:
d) The data is a random sample from the population of interest.
Step-by-step explanation:
To construct a confidence interval, certain conditions has to be met before the validity of the confidence interval could be established, this include a sufficiently large sample, (n > 30)
n (1- p) ≥ 10 = 132(1 - 104/132) = 132 * 0.2121 = 28 (condition is met).
The condition which the data fail to meet is the randomization condition, whereby the method of selection isn't completely random with some participants having a much more chances of being selected ahead of others. A better random sampling procedure should be is d in the population to draw out the required sample.
The relationship between n and 4 is
n>4
We have,
7
> 7
The number 7 which is in multiplication on left hand side of the expression, will come in denominator on right hand side of the expression.
⇒
>
⇒
> 1
Again 4 in denominator from left hand side will come in numerator on right hand side
⇒ n > 4