Q: Only 14% of registered voters voted in the last election. Will voter participation change for the…
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Q: Consider the following hypothesis test. Ho: Hs 50 Hiu > 50 A sample of 60 is used and the population…
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A: * SOLUTION :- (4) From the given information the answer is given as follows ,
Why does a confidence interval contain more information than the result
of a single hypothesis test?
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- "Why can’t I just test the individual coefficients one at a time"? is this approach is unreliable?Conjecture: the average grade in the class is a 75. What is the alternative hypothesis assuming a 2-tailed t-test? The Average Grade is greater than 75 The Average Grade is less than 75 The Average Grade is not equal to 75 The Average Grade equals 75The score of 8 candidates prior and after training are given below Test the hypothesis whether performance improved after the training at 5% los. Prior 84 48 36 37 54 69 83 96 After 90 58 42 44 62 81 84 86
- A shopper wanted to test whether there was a difference in the average waiting times at the check-out counter among 5 different supermarkets. She selected a random sample of 20 shoppers from each of the five supermarkets. i. What is the null hypothesis for this situation? OThe average waiting time to check out is 25 minutes for all five supermarkets OThe average waiting time for each of the 100 shoppers is different. ONone of these OThe average waiting time to check out is the same for all five supermarkets OThe average waiting time to check out is not the same for all five supermarkets. ii. What is the alternative hypothesis for this situation? OThe average waiting time to check out is 25 minutes for all five supermarkets OThe average waiting time to check out is the same for all five supermarkets OThe average waiting time for each of the 100 shoppers is different. ONone of these OThe average waiting time to check out is not the same for all five supermarkets.We are studying the factors that contribute to unemployment at an individual level. UE, unemployment, is our dependent variable and it is a binary variable that takes the value 1 if an individual is unemployed and 0 if they are employed. We have a random sample and we estimate the following model: UE^= 0.508−0.051educ−0.023urban+0.005age(0.122) (0.012) (0.005) (0.002)n=6214, R2=0.474 where educ = an individual’s years of education urban = a dummy equal to 1 if the individual lives in an urban area and 0 otherwise age = an individual’s age in years What is the correct interpretation of the estimated coefficient on education?You are asked to perform a hypothesis test that population proportion is different from 0.35. Which of the following is the correct statement of the null and alternative hypotheses for this test? a H₀: π = 0.35 H₁: π ≠ 0.35 b H₀: π ≠ 0.35 H₁: π = 0.35 c H₀: π ≥ 0.35 H₁: π < 0.35 d H₀: π ≤ 0.35 H₁: π > 0.35
- Which of the following measures of central tendency can have more than one value in a single sample? Mode Median Variance MeanStates (and provinces) that have control over taxation sometimes reduce taxes in an attempt to spur economic growth. Suppose that you are hired by a state to estimate the effect of corporate tax rates on, say, the growth in per capita gross state product (GSP).(i) What kind of data would you need to collect to undertake a statistical analysis?(ii) Is it feasible to do a controlled experiment? What would be required?(iii) Is a correlation analysis between GSP growth and tax rates likely to be convincing? Explain.Is it true or false that endogenous sample selection will not cause bias in the OLS estimator.
- Allegiant Airlines is considering an overbooking policy for one of its flights. The airplane has 50 seats, but Allegiant is considering accepting more reservations than seats because sometimes passengers do not show up for their flights, resulting in empty seats. The PassengerAppearance worksheet in the file Overbooking contains data on 1,000 passengers showing whether or not they showed up for their respective flights. In addition, Allegiant has conducted a field experiment to gauge the demand for reservations for the current flight. During this experiment, they did not limit the number of reservations for the flight to observe the uncensored demand. The following table summarizes the result of the field experiment. No. of Reservations Demanded Probability 48 0.05 49 0.05 50 0.15 51 0.30 52 0.25 53 0.10 54 0.10 Suppose Allegiant receives a marginal profit of $108 for each passenger who books a reservation (regardless of whether they show up). In addition, suppose…How is the null hypothesis for a correlation different than a null hypothesis for a t-test?Consider the following hypothesis test: H 0: 50 H a: > 50 A sample of 55 is used and the population standard deviation is 7. Use the critical value approach to state your conclusion for each of the following sample results. Use = .05. With = 52.5, what is the value of the test statistic (to 2 decimals)?Can it be concluded that the population mean is greater than 50?Select Yes No Item 2 With = 51, what is the value of the test statistic (to 2 decimals)?Can it be concluded that the population mean is greater than 50?Select Yes No Item 4 With = 51.8, what is the value of the test statistic (to 2 decimals)?Can it be concluded that the population mean is greater than 50?