147fall97-final - Top Your score Perfect score 12 15 18 15...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Top Your score Perfect score 12 15 18 15 25 25 35 30 175 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Total Math 147 - Final Exam - Fall 1997 Name: ______________________________________ Section Number: ______________ Show ALL necessary work. Solutions with no supporting work where it is necessary will receive NO credit. NEATNESS COUNTS. All tables required for completion of problems are provided at the end of the test. P-values computed from incomplete tables should be presented as an interval. Carry out all your calculations to at least two digits to the right of the decimal point. When you are finished, hand in the exam to your T.A. Good Luck. For questions 1 - 20 circle the answer which best completes the sentence or answers the question. (3 pts each) 1. When performing tests of significance, a. P-values are computed assuming the null hypothesis is correct. b. small P-values generally support the null hypothesis. c. a test statistic measures the difference between the data and what is expected on the null hypothesis. d. both (a) and (c) are true. e. both (b) and (c) are true. 2. When working with sample surveys it is important to remember that, a. the population parameter is likely to change from sample to sample. b. non-respondents may be very different from respondents. c. hand-picking samples according to key characteristics to resemble the population was shown to be a good method for reducing sampling bias. d. probability methods allow the interviewer to choose the subjects in a survey. e. none of the above are true. 3. When drawing at random from a box with replacement, a. the probability histogram for the contents of the box ( when put into standard units) will follow the normal curve if the number of draws is large. b. the probability histogram for the average of the draws ( when put into standard units) will follow the normal curve if the number of draws is large. c. if the number of draws is quadrupled then the expected value for the average quadruples. d. if the number of draws is quadrupled then the expected value for the average doubles. e. both (a) and (d) are true.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4. Which of the following statements is true? a. The inter-quartile range is a measurement of the center of a set of data. b. In a histogram with a long left tail, more than 50% of the data lies to the left of the average. c. The median of a large data set is usually strongly affected by the presence of outliers. d. Both (b) and (c) are true. e. None of the above statements are true. 5. A fair coin is tossed 100 times. a. the expected percentage of heads is the same as the expected percentage of tails. b. the SE for the percentage of heads in the first 25 tosses is the same as the SE for the percentage of tails in the last 25 tosses. c.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/27/2008 for the course MATH 147 taught by Professor Klimko during the Fall '07 term at Binghamton University.

Page1 / 14

147fall97-final - Top Your score Perfect score 12 15 18 15...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online