document.write( "Question 449994: 6. A spinner that has 3 sections of equal area, numbered from 1 to 3, is spun two times in succession. Which is NOT part of the sample space? (2 points)
\n" ); document.write( "(1, 3)
\n" ); document.write( "(3, 3)
\n" ); document.write( "(3, 2)
\n" ); document.write( "(3, 4)
\n" ); document.write( "7. A local weather forecaster is accurate 85% of the time when predicting precipitation for the day. What is the probability that she will make correct precipitation predictions 4 days in a row? Round to the nearest whole percent. (2 points)
\n" ); document.write( "about 54%
\n" ); document.write( "about 53%
\n" ); document.write( "about 52%
\n" ); document.write( "about 47%
\n" ); document.write( "8. A bag contains 6 purple marbles and 7 white marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is white and the second one is purple? (2 points)\r
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\n" ); document.write( "\n" ); document.write( "9. In how many different ways can you arrange 7 books on a shelf? (2 points)
\n" ); document.write( "823,543 ways
\n" ); document.write( "5,040 ways
\n" ); document.write( "720 ways
\n" ); document.write( "28 ways
\n" ); document.write( "Does the problem involve permutations or combination? Explain.
\n" ); document.write( "10. In how many different ways could a committee of 5 students be chosen from a class of 25 students?
\n" ); document.write( " (2 points)
\n" ); document.write( "Permutations; the order matters.
\n" ); document.write( "Permutations; the order does not matter.
\n" ); document.write( "Combinations; the order does not matter.
\n" ); document.write( "Combinations; the order matters.
\n" ); document.write( "11. You work at a T-shirt printing business. Of the 2,800 T-shirts shipped, 396 have a defect. What is the experimental probability that a T-shirt has a defect? Write your answer as a percent, to the nearest tenth of a percent. (2 points)
\n" ); document.write( "15.3%
\n" ); document.write( "14.1%
\n" ); document.write( "11.7%
\n" ); document.write( "19.4%
\n" ); document.write( "Is the sample described a good sample? Explain.
\n" ); document.write( "12. To find the average income of an adult in the United States, 250 workers in Tennessee are questioned. (2 points)
\n" ); document.write( "No; the sample is not random.
\n" ); document.write( "Yes; the sample is selected at random from the population to be studied.
\n" ); document.write( "No; the sample is not selected from the population to be studied.
\n" ); document.write( "13. A worker takes a random sample of 200 bolts and finds that 30 of them are either too long or too short, thus making them unusable. Estimate the number of unusable bolts in a production of 17,000 bolts. (2 points)
\n" ); document.write( "1,610 bolts
\n" ); document.write( "2,550 bolts
\n" ); document.write( "2, 140 bolts
\n" ); document.write( "2,260 bolts
\n" ); document.write( "14. Out of a random sample of 330 apples, 25 are rated \"AAA.\" Estimate the number of apples that would be rated \"AAA\" in a crop of 57,000 apples. (2 points)
\n" ); document.write( "about 432 apples
\n" ); document.write( "about 4,318 apples
\n" ); document.write( "about 43,180 apples
\n" ); document.write( "about 8,636 apples\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I have done a few of these problems, But honestly I am stuck. \n" ); document.write( "

Algebra.Com's Answer #309560 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Trust You were thinking along these lines.
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document.write( " 6.  There is NO #4 section to be included in the sample space
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document.write( " 7. P(4 days with a correct prediction)=  .85*.85*.85*.85 = .5220 = ~ 52%
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document.write( " 8.  13 marbles in all(6-p,7-w): 2 drawn w/o replacemet: P(w,p) = 7/13*6/12
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document.write( " 9.   7! = 5040  7*6*5*4*3*2*1 (each selection has one less book as a possibility)
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document.write( "10.  5 students chosen from a class of 25 students: 25C5,order does not matter
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document.write( "11. P = 396/2800 = .141 or 14.1% (to the nearest tenth)
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document.write( "12.sample is not a random sample from the US population to be studied
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document.write( "13. (30/200) * 17000 = 2550
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document.write( "14. (25/330)*57000 =  ~ 4,318 \n" );
document.write( "

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