Start studying Statistics Final Exam. Final Exam December 19, 2010 Directions: Before you leave, you must turn in both this exam sheet and any statistical tables. Flashcards. 32. a. b) Only III is true. Created by. Answer: Probability for t = -1.97 for df = 10 is between 0.025 and 0.05. Past data has shown that the regression line relating the final exam score and the midterm exam score for students who take statistics from a certain professor is: final exam = 50 + (0.5)(midterm). A significance test for comparing two means gave t=−1.97 with 10 degrees of freedom. 7.78 8.62 Show all work; writing the correct P-value, without supporting work, will receive no credit. statistic. A final exam in Math 160 has a mean of 73 with standard deviation 9.8. (c) Is there sufficient evidence to justify the rejection of at the level? There is a 0.01 probability that the population mean is smaller than 529. b. So for two-sided test, the p- value is between 0.05 and 0.1. A student who scored 0 on the midterm would be predicted to score 50 on the final exam. Can you reject the null hypothesis that the μ’s are equal versus the two-sided alternative at the 5% significance level? (b) Determine the p-value for this test. Match. An interpretation of the slope is: A. The probability of observing a sample mean smaller than 529 when the population mean is 532 is 0.01. c. There is a 0.01 probability that the population mean is smaller than 532. d. If the significance level is 0.05, you will accept the null hypothesis. a number that describes the population. If not, you will receive a significant grade reduction. All cell phones, PDAs, iPods, laptops, etc, should be turned off and put out of sight. Choose from 500 different sets of final exam elementary statistics flashcards on Quizlet. Learn final exam elementary statistics with free interactive flashcards. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 31. sample statistic – ME population parameter sample statistics + ME. In statistical practice, this value is not known because we cannot examine the entire population. (a) True (b) False 13. The probability that the mean typing rate of freshmen equals the mean typing rate of seniors is .011. a) Only I is true. Business Statistics Final Exam Solutions December 17, 2008 3 12. mean = 11.967, SD = 1.886, =.4167. Assume that a random sample of 24 students is selected and the test score of … Terms in this set (64) parameter. (1 pt) From the empirical rule we can deduce that, for any distribution, 95% of the observations fall between the mean plus or minus two standard … c) Only I & II … 30. answers are the formulas for the standard deviation of the sampling distribution. Jennlovestennis. (a) Determine the test statistic. not always, the sample size will have an influences in the final estimating of the population parameter. a. Learn. Show all work; writing the correct test statistic, without supporting work, will receive no credit. PLAY. Gravity. The probability that the true mean difference for freshmen-seniors lies between -0.9 and -11.2 is .95. II. Test. (1 pt) The Central Limit Theorem says that for large sample sizes the sample mean has an approximately normal distribution. B. You are allowed to use a calculator and a two-sided sheet of notes for this exam. a. Statistics Final Exam. III. Write. Spell. STUDY. 7.