2. A pizza delivery company claims that its average delivery time is less than 45 minutes. State the null and alternative hypotheses that would be used to prove this claim.
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- The life expectancy of a male during the course of the past 100 years is approximately 27,715 days. Use the table to the right to conduct a test using a=0.05 to determine whether the evidence suggests that chief justices live longer than the general population of males. Suggest a reason why the conclusion drawn may be flawed. State the appropriate null and alternative hypotheses. O A. Ho: p=27,715 versus H₁: μ27,715 O E. Ho: p=30,747 versus H,: μ#30,747 Chief Life Chief Justice Span (Days) Justice A I J K L M N 0 P BCDEFGH 31,073 29,372 Ioanngildin 30,227 28,918 32,452 32,628 26,577 32,592 Life Span (Days) 32,934 27,432 HERITATION 30,629 OB. Ho: H=27,715 versus H₁: p #27,715 OD. Ho H=30,747 versus H₁: 30,747 1967 30,930 32.407 28,319 32,741 32,716 ted nyThe average hourly wage of computer programmers with 2 years of experience has been $24.30. Because of high demand for computer programmers, it is believed there has been a significant increase in the average hourly wage of computer programmers. To test whether or not there has been an increase, which of the following are the correct hypotheses to be tested? Но: и 24.30 Но: и %3D 24.30 H: u + 24.30 Но и> 24.30 H: µ < 24.30 Ho: H < 24.30 Ha: u 2 24.30conclude? do not own cars. What are the hypotheses and what do you sample of 144 employees and 6.14 A canning company agrees with their supplier of canning watermelons that a rate of 6% spoiled melons at the loading platform is reasonable. When the cannery takes a sample of 100 melons from a truckload delivered by the supplier and finds at least eight of them are defective, then the cannery returns the whole shipment. In your opinion was this a reasonable action? a. What is the decision rule that should be used? b. What is the probability of the Type I error? c. Explain the meaning of Type I and Type II errors in economic terms as they would be seen by each of the two parties, the canning company and the supplier.
- A sample of 1100 computer chips revealed that 25% of the chips fail in the first 1000 hours of their use. The company's promotional literature claimed that 28% fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.10 level to dispute the company's claim? State the null and alternative hypotheses for the above scenario. Answer Ho Ha Tables Keypad Keyboard ShortcutsThe label on a 4-quart container of orange juice states that the orange juice contains an average of 1 gram of fat or less. Answer the following questions for a hypothesis test that could be used to test the claim on the label. (a) Develop the appropriate null and alternative hypotheses. H0: ? > 1 Ha: ? ≤ 1 H0: ? < 1 Ha: ? ≥ 1 H0: ? ≤ 1 Ha: ? > 1 H0: ? = 1 Ha: ? ≠ 1 H0: ? ≥ 1 Ha: ? < 1 (b) What is the type I error in this situation? What are the consequences of making this error? It is claiming ? < 1 when it is not. This error would claim that the product is not meeting its label specification when it really is meeting its specification. It is claiming ? ≥ 1 when it is not. This error would miss the fact that the product is not meeting its label specification. It is claiming ? ≤ 1 when it is not. This error would miss the fact that the product is not meeting its label specification. It is claiming ? > 1 when it is not. This error would claim that the…what is the null hypothesis statement and alternative hypothesis statement of the first one?
- An Internet provider is trying to gain advertising deals and claims that the mean time the competitors' customers spend online per day is less than 39 minutes. You are asked to test this claim. (a) How would you write the null and alternative hypotheses if you represent the Internet provider and want to support the claim? (b) How would you write the null and alternative hypotheses if you represent a competing advertiser and want to reject the claim? (a) Ho Ha 39 ▼39 Check answer25. Suppose that a researcher is interested in the effect of an exercise program on body weight among men. The researcher expects a treatment effect of 3 pounds after 15 weeks of exercise in the exercise program. In the population, the mean adult body weight for men is μ = 195.5 pounds, o=42.0. For all of the following, assume that a = .05, two-tailed. a. State the null and alternative hypotheses using symbols. Answer + b. Compute the power of the hypothesis test for a sample n = 2,500.In order for an airline to cancel a flight, there needs to be over 6 inches of snow on the ground. Suppose we want to do a test to prove there is over 6 inches of snow on the ground. (Hint: In order to answer this question, you should first write out the null and alternative hypotheses). What is the type I error I could make here? Describe it in terms of this situation, NOT a general а. definition.
- Suppose a business person wishes to open a store in a local shopping centre only if there is strong evidence that the average number of people in the centre is greater than 5000 per day. What is the null hypothesis will be: H0: μ < 5000 or H0: μ > 5000 or H0: μ ≤ 5000 or H0: μ ≥ 5000An Internet provider is trying to gain advertising deals and claims that the mean time the competitors' customers spend online per day is less than 21 minutes. You are asked to test this claim. (a) How would you write the null and alternative hypotheses if you represent the Internet provider and want to support the claim? (b) How would you write the null and alternative hypotheses if you represent a competing advertiser and want to reject the claim? (a) H0: ▼ muμ sigma squaredσ2 pp sigmaσ ▼ greater than or equals≥ not equals≠ less than< less than or equals≤ greater than> 21 Ha: ▼ sigmaσ sigma squaredσ2 pp muμ ▼ not equals≠ less than< greater than> less than or equals≤ greater than or equals≥ 21 (b) H0: ▼ muμ sigmaσ pp sigma squaredσ2 ▼ greater than> greater than or equals≥ not equals≠ less than< less than or equals≤ 21 Ha: ▼ sigma squaredσ2 muμ sigmaσ pp…On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities. 10.48 9.18 11.8 6.5 12.42 14.53 15.56 10.12 14.5 16.18 17.6 19.18 17.98 12.85 16.8 17.35 15.64 14.8 18.91 17.99 14.9 18.42 16.05 26.85 22.32 22.76 20.98 23.45 19.05 23.7 19.26 23.75 27.8 27.05 27.14 26.99 24.68 37.86 26.51 39.01 29.46 41.65 (a) Formulate hypotheses that can be used to determine whether the population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from the $21.62 rate charged by Tulsa. (Enter != for # as needed.) Ho: (b) What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.) What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal…
