Answer:
a) (0.806, 0.852)
b)Margin of error ≤ 0.01
1.96*√{0.5*(1–0.5)/n} ≤ 0.01
√n ≥ 98
n ≥ 9604
• Smallest sample size = 9604
Step-by-step explanation:
I found this on Chegg
Answer:
The sample proportion denoted
, is given by the formula
, where x is the number of individuals with a specified characteristic in a sample of n individuals.
When we want to estimate the real population proportion
we use as estimate the sample proportion, given by
. Where:
x is the number of individuals with a specified characteristic in a sample
n represent the sample size of individuals selected.
Step-by-step explanation:
For this case we can complete the phrase like this:
The sample proportion denoted
, is given by the formula
, where x is the number of individuals with a specified characteristic in a sample of n individuals.
When we want to estimate the real population proportion
we use as estimate the sample proportion, given by
. Where:
x is the number of individuals with a specified characteristic in a sample
n represent the sample size of individuals selected.
C. -10
(20+2x)/(5-x)
Multiply both sides by lowest common denominator, simplify

2x + 20 = 0
2(x + 10) = 0
factor out 2 from 2x+20