Reading Questions Answer Checker
To check your answers put them in the appropriate box and click the ‘Check’ button. Every checker box can do arithmetic and calculate standard functions (see calculator help). If you give decimal answers, give them to at least 3 decimal places.
As you work you should have pencil and paper handy for calculations and thinking!
Note: some questions ask for a formula. For the checker we ask you to plug a value into the formula. For your pset you still need to give the whole formula.
//DEBUG PARAMETERS //Because we don’t show solutions for pset checkers we use //this to give a showanswer button during the debugging phase var debugans = undefined; //release //var debugans = kDebugAnswer; //debug problemNumber = 0; wl(“Calculator”); writecalculator(“psetcheckcalcid”, “Calculate”); whr(kdivcol,kdivwid);
//Problem 1 problemNumber++; wl(problemheader(problemNumber)); var s; var partName, problemName, buttonLabel, answerArray, correct; s = “Suppose $X$ is a continuous random variable with pdf $f(x)$."; wl(s); wl(kp); s = “(a) What is the total area under the graph of $f$?"; wl(s) wl(kp) partName = problemNumber + " (a)"; problemName = “prob” + partName; buttonLabel = “Check problem " + partName; writeNumericBox(partName+"id”, 1, buttonLabel, 0.001, kuseCorrectVal); wl(kp); s = “(b) Can $f(x)$ be greater than 1?"; wl(s); wl(kbr); partName = problemNumber + " (b)"; problemName = “prob” + partName; buttonLabel = “Check problem " + partName; correct = “Yes”; var answerArray = [correct, “No”]; writeMultipleChoiceRadioGroup(answerArray, problemName, correct, buttonLabel); wl(kp); s = “(c) Can $∫_a^b f(x) dx$ be greater than 1?” wl(s) wl(kbr) partName = problemNumber + " (c)"; problemName = “prob” + partName; buttonLabel = “Check problem " + partName; correct = “No” var answerArray = [“Yes”, correct]; writeMultipleChoiceRadioGroup(answerArray, problemName, correct, buttonLabel); wl(kp); s = “(d) If 3 is in the range of $X$ what is $P(X=3)$?"; wl(s); wl(kp); partName = problemNumber + " (d)"; problemName = “prob” + partName; buttonLabel = “Check problem " + partName; writeNumericBox(partName+"id”, 0, buttonLabel, 0.0001, kuseCorrectVal); wl(kp); whr(kdivcol,kdivwid);