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.
Calculator
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Problem 1.
True or False. The mean divides the probability mass in half.True
False
Problem 2.
Find the mean and variance of U(0,4).(U(0,4) is the uniform distribution.)
(i) Mean
(ii) Variance
Problem 3.
Find the mean and variance of the sum of four independent U(0,4) random variables.What is the range?
(i) Mean
(ii) Variance
(iii) Lower limit of range
(iv) Upper limit of range
Problem 4.
Find the 0.7 quantile of U(2,32).