document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=356623>Question 356623</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can anyone please answer all these question for me because Iam having hard time with these questions\r<BR>\n" );
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document.write( "Explain what is wrong and why it is wrong: \r<BR>\n" );
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document.write( "1. You bought 10 lottery tickets. One of them won a prize. That means that the probability of winning a prize is 1/10. \r<BR>\n" );
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document.write( "2. In a lottery, buying more tickets does not affect your chances of winning a prize. \r<BR>\n" );
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document.write( "3. John has 3 suits, 10 shirts, and 12 neckties.  He will need to buy some more clothes if he wants to come to work each work day in a different outfit for a whole year. \r<BR>\n" );
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document.write( "4. If in a probability distribution you get the sum of probabilities less than one, it just means that you have a smaller-than-normal distribution \r<BR>\n" );
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document.write( "5. From the perspective of the insurance company, health insurance policies are set up in such a way that a healthy person has a negative expected value, and a sickly person has a positive one.\r<BR>\n" );
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document.write( "6.  For a given data set, the mean and median are always nearly equal. <BR>\n" );
document.write( "7.  In the same set of data, no two may have the same z score. <BR>\n" );
document.write( "8.  A negative z score is unusual. <BR>\n" );
document.write( "9.  For a set having only negative values, both the mean and standard deviation will be negative. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #254655 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=254655\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Explain what is wrong and why it is wrong: <BR>\n" );
document.write( "1. You bought 10 lottery tickets. One of them won a prize. That means that the probability of winning a prize is 1/10. <BR>\n" );
document.write( "--The probability of winning depends on the sample space (the set of all possible n choices if a lottery ticket contains n whole numbers.)  That is much larger than 10.<BR>\n" );
document.write( "2.In a lottery, buying more tickets does not affect your chances of winning a prize. <BR>\n" );
document.write( "--Chances are higher because the size of the subset of possible winning numbers is greater. <BR>\n" );
document.write( "3. John has 3 suits, 10 shirts, and 12 neckties. He will need to buy some more clothes if he wants to come to work each work day in a different outfit for a whole year. <BR>\n" );
document.write( "--He doesn't need to buy some more clothes, because he can suit up differently for 3*10*12 = 360 days.<BR>\n" );
document.write( "4. If in a probability distribution you get the sum of probabilities less than one, it just means that you have a smaller-than-normal distribution.<BR>\n" );
document.write( "--The sum of probabilities has to be 1, or else it's not a probability distribution.<BR>\n" );
document.write( "5. From the perspective of the insurance company, health insurance policies are set up in such a way that a healthy person has a negative expected value, and a sickly person has a positive one. <BR>\n" );
document.write( "--If this were the case, the insurance company would lose money by paying claims from sick policyholders all the time, and would be embezzling money from healthy policyholders.<BR>\n" );
document.write( "6. For a given data set, the mean and median are always nearly equal. <BR>\n" );
document.write( "--If the data set is heavily skewed to the right, mean > median.  If the data set is heavily skewed to the left, mean < median.<BR>\n" );
document.write( "7. In the same set of data, no two may have the same z score. <BR>\n" );
document.write( "--Repetition of z-scores is possible, because there may be repetition of sample points from which the z-scores came.<BR>\n" );
document.write( "8. A negative z score is unusual.<BR>\n" );
document.write( "--A negative z-score simply says that the sample point is less than the mean of the data set, which is not unusual.<BR>\n" );
document.write( "9. For a set having only negative values, both the mean and standard deviation will be negative. <BR>\n" );
document.write( "--Standard deviation is always positive, as it is the square root of the variance of the data set.\r<BR>\n" );
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