Suppose a geyser has a mean time between eruptions of 95 minutes. If the interval of time between the eruptions is normally distributed with standard deviation 23 minutes, answer the following questions.
(a) What is the probability that a randomly selected time interval between eruptions is longer than 106 minutes?
The probability that a randomly selected time interval is longer than 106 minutes is approximately 0.3156 (Round to four decimal places as needed.)
(b) What is the probability that a random sample of 12 time intervals between eruptions has a mean longer than 106 minutos?
The probability that the mean of a random sample of 12 time intervals is more than 106 minutes is approacimately (Round to four decimal places as needed.)

the answer to the expression is 83

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

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