Question 1
Welcome to the BSTAT written exam.
You are looking at the version for normal time students (so 120+ 5 minutes for the selfie). If you are entitled to extra time, close the current quiz now and go to the extra time exam quiz.
For emergency questions during the exam (the real exam that is), you can mail me your emergency question (c.s.bos@vu.nl) using the subject line starting with "BSTAT: ". I will check mail regularly.
Before proceeding, choose one of the statements below that applies to you.
Correct
I will make this exam by myself without any outside help for the entire duration of the exam.
Question 2
Let X be a normal random variable N(μ= − 200, σ2=1024).
Compute the probability P (X ≥ −156) in 4 decimal positions.
(Use 4 decimals behind the decimal point in your answer. Also, use a decimal point, *not* a comma and only round your *final* answer and not any intermediate results.)
Correct 0.0846
Question 3
Let X1 and X2 be two independent normal random variables,
both N(μ=110, σ2=625) distributed. Let
X=0.5(X1 + X2). Compute P (X ≥ 95) in 4 decimal positions.
(Use 4 decimals behind the decimal point in your answer. Also, use a decimal point, *not* a comma and only round your *final* answer and not any intermediate results.)
Correct 0.8019
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