The output of a chemical process is continually monitored to ensure that the concentrationremains within acceptable limits. Whenever the concentration drifts outside the limits, the process is shut down and recalibrated. Let X be the number of times in a given weekthat the process is recalibrated. The following table presents values of the cumulativedistribution function F(x) of X. F(x) =0 if x<00.17 if 0≤x<10.53 if 1≤x<20.84 if 2≤x<30.97 if 3≤x<41 if x≥4(i) Graph the cumulative distribution function.(ii) What is the probability that the process is recalibrated fewer than 2 times during aweek?(iii) What is the probability mass function (PMF) for X

answer: 1 + 1 = 11

step-by-step explanation:

can you put the picture up?

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

step-by-step explanation: