Stats please help?!?

Assume the heights if high school basketball players are normally distributed, For boys the mean is 74 inches with a std. dev. of 4.5 in., while for the girls the mean in 70 in. w/ a std. dev. of 3 in. At a mixed 2 - on - 2 tournament teams are formed by randomly pairing boys with girls as teammates.





On what fraction of teams would you expect the girl to be taller than the boy?








Which of the following has a Binomial model?





A. The # of people we survey untill we find someone who has taken Stats.


B. the # of people we survey untill we find 2 people who have taken Stats.


C. The # of people in a class who have taken Stats.


D. The # of aces in a five card poker hand.


E. The # of sodas students drink per day.

Stats please help?!?
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Reply:The second Question is easy. Binomial is looked at this way. You either are something or your not. so C and D are examples of this you either have taken stats or you havent. You either are an Ace or your not an Ace.





The first question is not worded very well. But your Null statement would be x1=x2 and your alternate would be x1%26lt;x2 this is where x1 would be the boys and x2 girls.


Unfortuantly this is where your stats book deviates from normal stats. It should ask for either a Confidence interval in which you would find (whatever data they want) or that just the plain question of can if be concluded that the boys team is taller than the girls with a (given confidence, usually .05) If your familiar with P values your p value is .00041308955. wish i could help more but the question is odd.

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