A normal distribution has a mean of 14 and a standard deviation of 2.5. what is the probability that a randomly-selected x-value from the distribution is in the interval of [11.5, 19]?
a. 0.32
b. 0.68
c. 0.815
d. 0.95

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

What is the value of x in the equation7x+2y=48 when y=3