The ages of rocks in an isolated area are known to be approximately normally distributed with a mean of 7 years and a standard deviation of 1.8 years. using the normalcdf function on your graphing calculator, what percent of rocks are between 5.8 and 7.3 years old?
a. 31.4%
b. 37.5%
c. 3.14%
d. 41.3%

Sixth step is a solution implemented in the decision-making process of solving a workplace problem

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

Idon’t know the answer

answer:

heck yea

explanation:

hi