According to a report from the COC (Centers of Disease Control and Prevention),

Question

According to a report from the COC (Centers of Disease Control and Prevention), there are about 300,000 cases of mild TBI mr-atic Brain Inn per year in all sports. Another CDC report desoribes the TBI cases associated with emergency department visits for montfatal raumatic brain njuries related to sports or recreational activities for American males 15 to 19 years old during the time period 2001 to 2009 The frequencies of TBi cases for the most commonty involved sports are given in the table below 30.3% 9.7% 90% 67% 58% If a 15-19 year old male comes to the emergency room with a non-fatal head injury.estimate the probability that his injury was due to some activity besides those listed in the table A 0.189 8.0.387 C387 OD is not possible to approximate this from the given information QUESTION 7 Use the table in the previous question to approximale the probability an American male 15 to 19 years old with a nonfatal traumatic brain injury was injured in football or basketball (We can assume "Tooltbalr and baskeba are disjoint because people cant play football and basketball at the same time A 0.393 B 0.607 C 027 O D. 39.3 QUESTION 1 When we toss a fair coin, we say that the probability that it lands heads up is 0.50. This means: A The proportion of heads, in a long series of tossing a coin, will be about 0.50 8. If you toss a fair coin once and you see a head, the next time you toss the coin you will see a tail OCFor every 1000 times you toss a fair coin, you will see exactly five hundred heads D For every 10 times you toss a fair coin, you will be sure to see a head in five of the tosses QUESTION 2 Which of the following pairs of events is/are disjoint? Choose all that meet this requirement. (There may be more than one correct answer) A A coin is flipped three times. A is the event 'we got more heads than tails" and B is the event The first fip resulted in tails. 8 we choose a partigant inthe Nurses Heith suoy at andom The rventAs the parnicant worsed rotating night shifts and suffered from coronary heart disease The event 8 is 'the participant worked rotating night shifts and did not suffer from coronary heart disease C. You roll a pair of dice, the event A is Tthe sum is 4 and the event 8 is tone of the dice shows a 3 D.A UC. student is chosen at random. A is the event "The student is undecided about histher major" and 8 is the event "the student is a biology major

Explanation / Answer

Ans:

1)

P(other)=1-0.303-0.097-0.09-0.067-0.056=0.387

Option B is correct(0.387)

7)

P(footbal or basketball)=0.303+0.09=0.393

Option A is correct(0.393)

1)When we toss a fair coin,we say that it lands up head is 0.5,it means that the proportion of heads in long series of tossing a coin will be about 0.5

Option A is correct.

2)Option B is correct.

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