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Students Home xPearson's MyLab & MasteriReview Test-Stormie Scho X https://www.mathxl.com/Student/PlayerTest.aspx?testResultId-653605466&back-;/Student/Results.aspx%3Frode%3DAIR MAT 2342-001 Intro to Prob and Stat Fall 2017-Langford Review Quiz: Quiz 4: Section 5.5-6.2 Score: 0.75 of 1 pt 110f 15 Test Score: 83.33% 6.1.23 The graph of the discrete probability to the right represents the number of live births by a mother 46 to 49 years old who had a live birth in 2015. 0 10 (b) What is the probability that a randomly selecfled to 49-year-old mother who had a live birth @015 has had her fourth or fifth linairth? 222 (Type an integer or a decimal) (e) What is the probability that a randomly selected 46- to 49-year olis mother who had s live birth in 2015 has 0.108 (Type an integer or a decimal) (d) If a 46- to 49-year old mother who had a live birth in 2015 is randomly selected, how many live births would you expect the mother to have had? 3 (Round to one decimal place as needed) Question is complete. Tap on the ted indicators to see incorrect answers had her sixth or more live birth? s1)Explanation / Answer
a) P(a randomly selected 46 to 459 year old who had her fourth or fifth live birth in 2015)
= P(4) + P(5)
= 0.114+0.108
= 0.222
b) P(a randomly selected 46 to 459 year old who had her sixth or more live birth in 2015)
= P(6) + P(7) + P(8)
= 0.029 + 0.035 + 0.044
= 0.108
c) Expected number of births = 1x0.233 + 2x0.274 + 3x0.163 + 4x0.114 + 5x0.108 + 6x0.029 + 7x0.035 + 8x0.044
= 3.037
= 3.0