The accompanying table describes results from groups of 8 births from 8 differen

Question

The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children Complete parts (a) through (d) below Click the icon to view the table a. Find the probability of getting exactly 6 girls in 8 births (Type an integer or a decimal Do not round) b. Find the probablity of getting 6 or more girls in 8 births (Type an integer or a decimal. Do not round ) c. Which probability is relevant for determining whether 6 is a significantly high number of girls in 8 births the result from part (a) or part (b)? 0 A. Since the probability of getting fewer than 6 grls is the complement of the result from part this is the relevant probability O B. Since the probability of getting 6 girls is the result from part (a). this is the relevant probability . Since the probability of getting 7 or 8 girls includes getting 6 girls, te result from part (b) is the relevant probability ests O D. Since the probability of getting 7 or 8 girts is less lkely than getting 6 girls, the result from part (a) is the relevant probability sts a d. is 6 a significantly high number of girts in 8 births? Why or why not? Use 0 05 as tho threshold for a significant event O A. Yes, since the appropriate probability is less than 0 05, it is a signilficantly high number O B. No, since the appropriate probability is less than 0 05, it is not a significantly high number O c. Yes, since the appropriate probability is greater than 0 05, it is a sigificantly high number opter1 O D. No, since the appropriate probability is greater than 0.05, it is not a significantly high number apter 1 Cicx to select your answers) hapter 1 Chapter 2 Pre Test Chapter 2 Review Qui 21 i O 211 D 114

Explanation / Answer

Ans:

p(x)=8Cr*0.5r*(1-0.5)8-r

So,correct table should be below given:

a)P(x)=0.109

*(if table given in image is considered,then p(x=6)=0.119)

b)P(x>=6)=0.109+0.031+0.004=0.145

*(if table given in image is considered,then p(x>=6)=0.119+0.011+0.004=0.134)

c)Option C is correct.

d)Option D is correct.

No,since the appropriate probability is greater than 0.05,it is not a significantly high number.

x p(x) 0 0.004 1 0.031 2 0.109 3 0.219 4 0.273 5 0.219 6 0.109 7 0.031 8 0.004

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