Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:
In which:
is the sample proportion.
In this problem, we have a 90% confidence level, hence
, z is the value of Z that has a p-value of 
, so the critical value is z = 1.645.
The sample size and the estimate are given by:
Hence, the bounds of the interval are given by:
The 90% confidence interval is given by: (0.6350, 0.6984).
More can be learned about the z-distribution at brainly.com/question/25890103
#SPJ1
Answer:
They all are polynomials.
Step-by-step explanation:
Given : Following expression
1) 
2) 
3) 
4) 
The following all are polynomials because polynomials are:
An expression consisting of variables and coefficients or expression more than two algebraic terms and the terms that contain different powers of the same variable(s) involve operations addition , subtraction, multiplication and non-negative integer exponent of variables.
So when we see to these functions they all are a mixture of a polynomial.
Eight and ninety-seven hundredths
Volume=LxWxH
1. Length=5
Width=1
Height=2
5x2x1=10
2. L=5
W=1
H=5
5x5x1=25
3. L=2
W=1
H=8
2x8x1=16
There you go!
The 1 is in the tenths place and the 5 is in the hundredths place, so we know that the denominator will be 100.
The numerator will be 15, since that is the decimal.
To simplify, first find the GCF between 15 and 100.
Now, to get the fully simplified mixed number, divide the numerator and denominator both by the GCF.
To convert the mixed number into an improper fraction, multiply the whole number by the denominator and add it to the numerator, keeping the denominator. This will be your final answer.
