Mathematics, 22.04.2020 03:40, glowbaby123
Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the successes!), whereas the other 70% want a used copy. Consider randomly selecting 25 purchasers. (a) What are the mean value and standard deviation of the number who want a new copy of the book? (b) What is the probability that the number who want new copies is more than two standard deviations away from the mean value? (c) The bookstore has 15 new copies and 15 used copies in stock. If 25 people come in one by one to purchase this text, what is the probability that all 25 will get the type of book they want from current stock? [Hint: Let X ¼ the number who want a new copy. For what values of X will all 25 get what they want?] (d) Suppose that new copies cost $100 and used co
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Mathematics, 21.06.2019 15:00, witerose701
Five dinosaurs go for a walk and come across some lovely chicken wings. their names are rexy, bronto, steggy, paly, and terry. there are exactly 5 dozen wings(equal enough for each dino to have a dozen right? ); however, terry is on a diet and he only eats 6 wings. if paly eats 2 more than terry, steggy eats 4 more than paly, and bronto and rexy eat the same amount because they are really hungry from not eating all day, how many chicken wings did each dino eat?
Answers: 1
Mathematics, 21.06.2019 19:00, 4presidents
The distributive property allows you to say that 3(x − 1) = 3x −
Answers: 1
Mathematics, 21.06.2019 21:30, celeste961
Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1
Answers: 2
Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the...
English, 04.04.2020 17:45
Mathematics, 04.04.2020 17:46