STA 3111 Fall 2017- Prof Florence George wendy Martinez9/17/17 2 omework: Week 5
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STA 3111 Fall 2017- Prof Florence George wendy Martinez9/17/17 2 omework: Week 5 - Chapter 3 Sections 5 to6 Score:0.14 of 1 pt 90f 9 (9 complete) HW Score: 90.48%, 8.140 36.90 Question Help In a study, the various stages of sleep for a large group of people were monitored in 30-second intervals, or "epochs."For each epoch, sleep stage w categorized as Wake, REM, or Non-REM. The accompanying table provides a summary of the results. Each cell of the table gives the number of epo that occurred when transitioning from the previous sleep stage to the current sleep stage. Complete parts a through e below E Click the icon to view the sleep stage data table. Yes, because Pllprevious stage is REMI nIcurrent stage is Wake)) No, because P(previous stage is REM) n (current stage is Wakej) 0.006 d. Are the events (previous stage is Wake) and (ourrent stage is Wakej independent? Select the correct choice below and fil in the answer boxjes) to complete your choice Type an integer or a decimal. Round to three decimal places as needed.) OA, No, because P(current stage is wake" prevea stage's wake)). ] and Perevious stages Wake): B. No because Plu evious stage is Wake)"cument stage is Wake»-and Pprevious stages wake). Cick to select and enter your answerls) and then cick Check Answer Clear All 2 3 4 5 6 9 0 O PExplanation / Answer
Total = 33277 + 8353 + 7542 = 49172
D) P(previous stage is wake) = 7542/49172 = 0.153
P( previous stage is wake | current stage is wake) = (5547/49172) / (7489/49172) = 5547/7489 = 0.741
Option-B) No, because P(previous stage is wake | current stage is wake) = 0.741 and P(previous stage is wake) = 0.153
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