Question
A pizza restaurant offers 13 style=”color:rgb(0,0,0);”> different toppings: 6 of them are vegetarian and 7 of them are non-vegetarian. A customer selects her first topping at random and then selects another one at random from the remaining toppings. What is the probability that both her selections are non-vegetarian?
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Question
A researcher is working with a group of 11 style=”color:rgb(0,0,0);”> participants, 6 of whom are female and 5 of whom are male. The researcher will select one participant from the group at random, and then she will select a second participant at random from the remaining participants. What is the probability that two females will be selected?
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Question
A university’s leadership council is made up of 11 style=”color:rgb(0,0,0);”> members: 3 are students, 3 are teachers, and 5 are deans. A newspaper reporter is planning to select two of the council members for interviews. The first member will be chosen at random, and then the second member will be chosen at random from the remaining members. What is the probability that two students will be selected?
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Question
I cannot figure out how to get the (f) piece of the problem below. Is there a formula I’m missing? />(e) Find the value of the coefficient of determination r2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for r2 to three decimal places. Round your answers for the percentages to one decimal place.) r2 =.978 explained 97.8 % unexplained 2.2 % (f) The calves you want to buy are 25 weeks old. What does the least-squares line predict for a healthy weight? (Round your answer to two decimal places.)16 kg
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