Kindly, check my results?
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Dear Experts,
Kindly, just I would like to be sure if my answers right or wrong. The answers in a bold font. Q1: Of 20,000 small businesses surveyed, about 82% said they employed women in some capacity. Of those that employed women, 19.5% employed no female supervisors, 50% employed only one female supervisor, and the remainder employed more than one female supervisor (Globe and Mail, October 1995). a How many of the businesses surveyed employed no women? 3198 b What proportion of businesses surveyed employed exactly one female supervisor? 41% c What proportion of businesses surveyed employed no female supervisors ? 16% d Given that a firm employed women, what is the probability that it employed at least one female supervisor? 81% Q2: A multiple-choice quiz has 15 questions. Each question has five possible answers, of which only one is correct. a What is the probability that sheer guesswork will yield at least seven correct answers ? 46% b What is the expected number of correct answers by sheer guesswork? 50% Many thanks. Omar. --------------------------------- Want to start your own business? Learn how on Yahoo! Small Business. |
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If the first question is about a real study, the questions per se are
problematic especially with very small businesses. This is a situation where a value of zero can have different meanings. This would be an example of the importance of distinguishing user missing and system missing values. Suppose there is a sole proprietorship or partnership with no employees? Is (are) owner partners M or F? Suppose there are zero supervisors? Just owner and 20 employees? What does it mean wrt the question of more than one female supervisor when there is only one. etc. Art Kendall Social Research Consultants Omar Farook wrote: >Dear Experts, > Kindly, just I would like to be sure if my answers right or wrong. The answers in a bold font. > > Q1: Of 20,000 small businesses surveyed, “about 82% said they employed women in some capacity.” Of those that employed women, 19.5% employed no female supervisors, 50% employed only one female supervisor, and the remainder employed more than one female supervisor (Globe and Mail, October 1995). > a How many of the businesses surveyed employed no women? 3198 > b What proportion of businesses surveyed employed exactly one female supervisor? 41% > c What proportion of businesses surveyed employed no female supervisors ? 16% > d Given that a firm employed women, what is the probability that it employed at least one female supervisor? 81% > > Q2: A multiple-choice quiz has 15 questions. Each question has five possible answers, of which only one is correct. > a What is the probability that sheer guesswork will yield at least seven correct answers ? 46% > b What is the expected number of correct answers by sheer guesswork? 50% > Many thanks. > Omar. > > > >--------------------------------- >Want to start your own business? Learn how on Yahoo! Small Business. > > > > |
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Dear Dr. Kendall,
The questions is an examples from a textbook. Thanks. Art Kendall <[hidden email]> wrote: If the first question is about a real study, the questions per se are problematic especially with very small businesses. This is a situation where a value of zero can have different meanings. This would be an example of the importance of distinguishing user missing and system missing values. Suppose there is a sole proprietorship or partnership with no employees? Is (are) owner partners M or F? Suppose there are zero supervisors? Just owner and 20 employees? What does it mean wrt the question of more than one female supervisor when there is only one. etc. Art Kendall Social Research Consultants Omar Farook wrote: >Dear Experts, > Kindly, just I would like to be sure if my answers right or wrong. The answers in a bold font. > > Q1: Of 20,000 small businesses surveyed, about 82% said they employed women in some capacity. Of those that employed women, 19.5% employed no female supervisors, 50% employed only one female supervisor, and the remainder employed more than one female supervisor (Globe and Mail, October 1995). > a How many of the businesses surveyed employed no women? 3198 > b What proportion of businesses surveyed employed exactly one female supervisor? 41% > c What proportion of businesses surveyed employed no female supervisors ? 16% > d Given that a firm employed women, what is the probability that it employed at least one female supervisor? 81% > > Q2: A multiple-choice quiz has 15 questions. Each question has five possible answers, of which only one is correct. > a What is the probability that sheer guesswork will yield at least seven correct answers ? 46% > b What is the expected number of correct answers by sheer guesswork? 50% > Many thanks. > Omar. > > > >--------------------------------- >Want to start your own business? Learn how on Yahoo! Small Business. > > > > --------------------------------- Want to start your own business? Learn how on Yahoo! Small Business. |
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In reply to this post by Omar Farook
At 04:55 AM 11/30/2006, Omar Farook wrote:
> Kindly, just I would like to be sure if my answers right or wrong. > The answers in a bold font. The bold font, of course, did not survive; SPSSX-L posts plain text only. Since you're asking us to grade your paper, we'll ask what any teacher would: show your work. How did you get those numbers? And the reasoning, not just the final formulae. (Maybe, then, somebody will answer you; maybe not. Grading papers isn't what most of us are most interested in, here.) |
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In reply to this post by Omar Farook
OK, I couldn't resist.
At 04:55 AM 11/30/2006, Omar Farook wrote: >I would like to be sure if my answers right or wrong. > > Q1: Of 20,000 small businesses surveyed, "about 82% said they > employed women in some capacity." Of those that employed women, 19.5% > employed no female supervisors, 50% employed only one female > supervisor, and the remainder employed more than one female > supervisor (Globe and Mail, October 1995). > a How many of the businesses surveyed employed no women? 3198 > b What proportion of businesses surveyed employed exactly one > female supervisor? 41% > c What proportion of businesses surveyed employed no female > supervisors ? 16% > d Given that a firm employed women, what is the probability that it > employed at least one female supervisor? 81% > > Q2: A multiple-choice quiz has 15 questions. Each question has five > possible answers, of which only one is correct. > a What is the probability that sheer guesswork will yield at least > seven correct answers ? 46% > b What is the expected number of correct answers by sheer > guesswork? 50% On brief inspection, your answers to Q1 are reasonable, and may very well be right; I haven't checked in detail. I think the answers to Q2 are badly wrong. To start with, what does it mean for "the expected number of correct answers" to be 50%? Review your reasoning there carefully. |
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