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Formats of Confidence Intervals. In Exercises 9–12, express the confidence interval using the indicated format. (The confidence intervals are based on the proportions of red, orange, yellow, and blue M&Ms in Data Set 27 “M&M Weights” in Appendix B.)
12. Blue M&Ms Express the confidence interval 0.270 ± 0.073 in the form of
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- EXERCISE 0.3. Roll three dice. Let A = 'the numbers on the first and second add to 7', B = 'the numbers on the second and third add to 7', and C = 'the numbers on the third and first add to 7'. Are A, B, C pairwise independent? Are they mutually independent? %3Darrow_forwarda.State the predictors available in this model.arrow_forwardEconometrics, Bruce Hansen exercise 7.8arrow_forward
- The data show the population (in thousands) for a recent year of a sample of cities in South Carolina. 26 26 15 29 69 21 30 29 13 26 20 38 85 19 19 23 29 25 111 47 30 49 108 30 38 Send data to Excel Part 1 of 8 The data value 29 corresponds to the 46" percentile. Part 2 of 8 The data value 38 corresponds to the 70"n percentile. Part: 2 / 8 Part 3 of 8 The data value corresponds to the 93rd percentile.arrow_forwardThe variable smokes is a binary variable equal to one if a person smokes, and zero otherwise. Using the data in SMOKE, we estimate a linear probability model for smokes: smokes = .656 – .069 log(cigpric) + .012 log(income) – .029 educ (.855) (.204) (.026) (.006) [.856] [.207] [.026] + .020 age – .00026 age? – .101 restaurn – .026 white [.006] (.006) (.00006) (.039) (.052) [.005] [.00006] [.038] [.050] n = 807, R² = .062. The variable white equals one if the respondent is white, and zero otherwise; the other independent vari- ables are defined in Example 8.7. Both the usual and heteroskedasticity-robust standard errors are reported. (i) Are there any important differences between the two sets of standard errors? (ii) Holding other factors fixed, if education increases by four years, what happens to the estimated probability of smoking? (iii) At what point does another year of age reduce the probability of smoking? (iv) Interpret the coefficient on the binary variable restaurn (a dummy…arrow_forwardYou own a stock portfolio invested 25 percent in Stock Q, 35 percent in Stock R, 18 percent in Stock S, and 22 percent In Stock T. The betas for these four stocks are 1.3, 0.7, 1.4, and 0.9, respectively. What is the portfolio beta? (Do not round intermediate calculations. Round your answer to 3 decimal places.) Portfolio betaarrow_forward
- Find quartile 1 (Q1) of the data set. {-4, -6, -9, -3, -2, -4, 0} O -6 ere to search F2 F3 F4 F5 F6 F7 F8 F9arrow_forwardClocking the Cheetah. The cheetah (Acinonyx jubatus) is the fastest land mammal and is highly specialized to run down prey. The cheetah often exceeds speeds of 60 mph and, according to the online document “Cheetah Conservation in Southern Africa” (Trade&Environment Database (TED) Case Studies, Vol. 8, No. 2) by J. Urbaniak, the cheetah is capable of speeds up to 72 mph. Following is a frequency histogram for the speeds, in miles per hour, for a sample of 35 cheetahs.arrow_forwardRegression and Predictions. Exercises 13–28 use the same data sets as Exercises 13–28 in Section 10-1. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5 on page 493. Manatees Use the listed boat/manatee data. In a year not included in the data below, there were 970,000 registered pleasure boats in Florida. Find the best predicted number of manatee fatalities resulting from encounters with boats. Is the result reasonably close to 79, which was the actual number of manatee fatalities?arrow_forward
- Part 2 of 2 What is the probability that a randomly chosen senior will have a GPA greater than 4.1? The probability that a randomly chosen senior will have a GPA greater than 4.1 is X Sarrow_forwardUsing Normal Approximation. In Exercises 5–8, do the following: If the requirements of np ≥ 5 and nq are both satisfied, estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution; if np ≤ 5 or nq < 5, then state that the normal approximation should not be used. Births of Boys with n= = 8 births and p = 0.512 for a boy, find p (exactly 5 boys).arrow_forward(Please do not give solution in image format thanku) To test the effect of a new diet on weight loss, a cardiologist has all his patients follow the diet for 8 weeks. At the end of the 8-week period, eighty percent (80%) of the patients experienced statistically significant weight loss. The cardiologist concludes that the new diet is an effective treatment for losing weight, but his conclusion is questionable because the weight loss experienced by the patients may have been due to the placebo effect. In this one-track experiment, the explanatory variable and the placebo effect are Confounded Valid Reliable Stratifiedarrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt