Scores of an iq test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. use the empirical rule to determine the following.
(a) what percentage of people has an iq score between 55 and 145?
(b) what percentage of people has an iq score less than 55 or greater than 145?
(c) what percentage of people has an iq score greater than 145?

it depends on the weather. because i have flown to seattle when it was pouring down rain and there was one time i flew to ohio when it was snowing hard. whats your situation.

step-by-step explanation:

ans789

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day