Preview Test: STAT1201 Semester 1 Final Examinations 2020 « Test Information Description School of Mathematics and Physics EXAMINATION Semester One, Final Examinations, 2020 STAT1201 Analysis of Scientific Data Instructions Answer all questions. For questions requiring a numerical answer, do not round intermediate calculations. At the end of your exam, there is a free text box field. Please use this to specify any assumptions you have made in completing the exam and which questions those assumptions relate to. You may also include queries you may have made with respect to a particular question, should you have been able to 'raise your hand' in an examination room. If you experience any technical difficulties during the exam, contact the Library AskUs service via the Live Chat or Phone for advice (open 7:00am - 10:00pm AEST every day during the final exam period). You should ask the library staff for an email documenting the advice provided so you can provide this to the course coordinator. Timed Test This test has a time limit of 2 hours and 30 minutes. This test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. [The timer does not appear when previewing this test] Multiple Not allowed. This test can only be taken once. Attempts Force This test can be saved and resumed at any point until time has expired. The timer will Completion continue to run if you leave the test. QUESTION 1 0 points Save Answer I certify that my submitted answers are entirely my own work and that I have neither given nor received any unauthorised assistance on this assessment item. Agree Disagree -----
1 points Save Answer QUESTION 2 Below is the quantile plot of the first 50 waiting times (in minutes) of the old faithful geyser. 90 80 000 0000 70 0 0 00 60 0000 0000000000 50 000 0.0 0.2 0.4 0.6 0.8 1.0 qunif The number of observations that would be flagged as unusual in a boxplot of this data using the 1.5 x IQR rule is O a. o b. 1 ) C. 2 ) d. 3 e. 4 QUESTION 3 1 points Save Answer While working from home, the number of cups of coffee a lecturer consumes each day has the following distribution. Cups of coffee 3 4 5 6 Probability 0.3 0.5 0.1 0.1 What is the standard deviation of this distribution (correct to 2 decimal places)?
QUESTION 4 The Australian Drinking Water Guidelines recommend that the pH of drinking water be between 6.5 and 8. A town claims that the pH of their water supply on a randomly selected day is normally distributed with a mean of 7 with sd of 0.5. What is the probability that the pH level is outside the recommended range on such a day (correct to 3 decimal places)? QUESTION 5 1 points 2 points Save Answer Save Answer Questions 5 to 9 concern the following study The efficacy