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math302 statics amu/apu

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Question;One of the requirements for a binomial experiment is that there must be a(n);number of trials.;Question 13 of 20;1.0 Points;Accepted characters;numbers, decimal point markers (period or comma), sign indicators (-), spaces;(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation).;NOTE: For scientific notation, a period MUST be used as the decimal point;marker. Complex numbers should be in the form (a + bi) where "a" and "b;need to have explicitly stated values. For example: {1+1i} is valid whereas;{1+i} is not. {0+9i} is valid whereas {9i} is not. Find the mean of the;probability distribution:X;0;1;2;3;4P(X);0.12;0.16;0.24;0.30;0.18Round your;answer to two decimal place as necessary. For example, 4.56 would be a;legitimate entry.Mean = Accepted characters: numbers, decimal point;markers (period or comma), sign indicators (-), spaces (e.g., as thousands;separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where "a" and "b" need to;have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is;not. {0+9i} is valid whereas {9i} is not. In February 2002 the;Argentine peso lost 70% of its value compared to the United States dollar. This;devaluation drastically raised the price of imported products. According to a;survey conducted by AC Nielsen in April 2002, 68% of the consumers in Argentina;were buying fewer products than before the devaluation, 24% were buying the same;number of products, and 8% were buying more products. Furthermore, in a trend;toward purchasing less-expensive brands, 88% indicated that they had changed the;brands they purchased. Suppose the following complete set of results were;reported. Use the following data to answer this question.;Number of;Products Purchased;Brands;Purchased;Fewer;Same;More;Total;Same;10;14;24;48;Changed;262;82;8;352;Total;272;96;32;400Given that a consumer changed brands, what then is the;probability that the consumer purchased fewer products than before? Place your;answer, rounded to 4 decimal places, in the blank.;Question 15 of 20;1.0 Points;Accepted characters;numbers, decimal point markers (period or comma), sign indicators (-), spaces;(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation).;NOTE: For scientific notation, a period MUST be used as the decimal point;marker. Complex numbers should be in the form (a + bi) where "a" and "b;need to have explicitly stated values. For example: {1+1i} is valid whereas;{1+i} is not. {0+9i} is valid whereas {9i} is not.;An ice cream vendor sells three flavors: chocolate;strawberry, and vanilla. Forty five percent of the sales are chocolate, while;30% are strawberry, with the rest vanilla flavored. Sales are by the cone or the;cup. The percentages of cones sales for chocolate, strawberry, and vanilla, are;75%, 60%, and 40%, respectively. For a randomly selected sale, define the;following events: = chocolate;chosen;= strawberry chosen;= vanilla;chosen;= ice cream on a;cone;ice cream;in a cupFind;the probability that the ice cream was vanilla flavor, given that it was sold in;a cup.;Place;your answer, rounded to 4 decimal places, in the blank. For;exampe, 0.3456 would be a legitimate entry.;Question 4 of 20;1.0 Points;What is the probability of drawing two queens in a row from a standard deck of;cards without replacement?;A.0.0015;B.0.0059;C.0.0385;D.0.0045;Reset Selection;Question 5 of 20;1.0 Points;Three cards are drawn from a deck without replacement. What is the probability;that all three cards are clubs?;A.0.0129;B.0.012;C.0.25;D.0.0156;Reset;Selection;Part 2 of 6 -;Question 6 of 20;1.0 Points;One of the requirements for a binomial experiment is that there must be a(n);number of trials.;A.fixed;B.infinite;C.random;D.odd;Reset Selection;Question 7 of 20;1.0 Points;Suppose that 50 identical batteries are being tested. After 8 hours of;continuous use, assume that a given battery is still operating with a;probability of 0.70 and has failed with a probability of 0.30. What is;the probability that greater than 30 batteries will last at least 8 hours?;A.0.8594;B.0.0848;C.0.9522;D.0.9152;Reset Selection;Question 8 of 20;1.0 Points;Suppose that 50 identical batteries are being tested. After 8 hours of;continuous use, assume that a given battery is still operating with a;probability of 0.70 and has failed with a probability of 0.30. What is;the probability that between 25 and 30 batteries (inclusive) will last at least;8 hours?;A.0.9169;B.0.1186;C.0.0839;D.0.7792;Reset Selection;Question 9 of 20;1.0 Points;Find the variance of the following probability distribution. X;P(X)1;0.302;0.153;0.054;0.255;0.25 A.1.73;B.1.61;C.2.60;D.1.27;Reset Selection;Question 10 of 20;1.0 Points;A drug is reported to benefit 40% of the patients who take it. If 6 patients;take the drug, what is the probability that 4 or more patients will benefit?;A.0.862;B.0.179;C.0.138;D.0.667;Reset Selection

 

Paper#61452 | Written in 18-Jul-2015

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