This implies the 95% confidence interval can be given by
Now simplify this expression until an expression of this kind is obtained
Where A and B are constants.
For example, for the pivotal function formed in (b), Confidence Interval can be given by
The confidence interval is
We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 192 had kids. Based on this, plot a
Express your answer in the form of three inequalities. Give your answers in decimal fractions up to three places
A population of values has a normal distribution with
Find the probability that a single randomly selected value is between 133.6 and 134.1.
Write your answers as numbers accurate to 4 decimal places.