Arecent gallup poll asked 1006 americans, "during the past year, about how many books, either hardcover or paperback, did you read either all or part of the way through? " results of the survey indicated that x = 13.4 books and s = 16.6 books. construct a 99% confidence interval for the mean number of books americans read either all or part of during the preceding year. interpret that interval.

The required interval is

Step-by-step explanation:

Consider the provided information.

It is given that:

n = 1006, mean = 13.4 and s = 16.6  

We need to construct a 99% confidence interval.

That means α = 0.01 and α/2 = 0.005

First find the standard error as shown:

Now to calculate confidence interval calculate:

Hence, the required interval is

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1