John davis, a manager of a supermarket, wants to estimate the proportion of customers who use food stamps at his store. he has no initial estimate of what the sample proportion will be. how large a sample is required to estimate the true proportion to within 3 percentage points with 98% confidence?

1509

Step-by-step explanation:

We know that, formula for number of samples is,

When nothing is given, we take and we know that .

SE = 0.03 (the true proportion should remain withing 3%)

Putting the values we get,

Therefore, the sample required to estimate the true proportion to within 3 percentage points is 1509.

8 apples are left.

step-by-step explanation:

10-2=8

10 apples

take 2

now u have 8

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.