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e Take a Test Nykol Green Internet Explonet https/www.mathal.com/Student/PleyerTest aspa/testid 175459802&center; Math 2000 Statistics-Section 14-Spring 2018 Quiz: Quiz2 Triola 4.2-4.5, 5.2 This Question: 1 pt Nykot Green 1 3/12/18 10:30 Time Remaining: 01:28.14 Subm This Quiz: 20 pts pos 40120(2complete) Assume thait 300 births are randomly selected and exacty 149 of the births are girls Use subjective judgment t also determine whether it is unusual in the sense that the result is far from what is typically expected determine whether the given outcome is unlkely, and Determine whether exactly 149 girls out of 300 randomly selected births is unlikely O A. his not unkely because giris are slightly less common than boys O B. ni5 unikely because ho probability of this particular outcome s very smal O C. It is not unlikely because 149 is about halt of 300 D. ttis unlkely because s not 150 as expected Determine whether exacty 149 girls out of 300 randomly selected births is unsual is very smail considering all of the other possible outcomes O A. unusual because n-not 150 as expected O B It is unusual because giris are more common than boys O C. It a not unusual because 149 gts out of 300 Bths is the only possibi ouncom O D. It is not unusual because 149 is about the number of girls expected FIOF11 F12 F7 F3 8 5 6 8 3

Explanation / Answer

A)

a event is unlikely if its probability is close to zero

here the event of 149 births as girls has a very small binomial probability tending to zero so option B is correct.

B)

A EVENT IS UNUSUAL IF ITS PROBABILTY IS LESS THAN 0.05. a probability less than 5% is unusual

so clearly this event is unusual option A is correct

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