A local restaurant does not accept any reservations and only focuses on walk-in customers. The owner of the restaurant wants to find out how many walk-in customers he should plan to have every day. To that end, kept records of the number of walk-in customers for the last 63 days. The average number of daily walk-in customers was 67.3 and the sample standard deviation is 7.1. Construct a 99% confidence interval for the number of customers on a given day. The lower limit is

The lower limit is

7

step-by-step explanation:

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4