The average annual salary of hotel chefs is 840,000php. (A) Null Hypothesis (Ho) (B) Alternative Hypothesis (Ha) The mean IQ of workers is above 105. (A) Null Hypothesis (Ho) (B) Alternative Hypothesis (H₂) The average life of a car battery is not more than 48 months. (A) Null Hypothesis (Ho) (B) Alternative Hypothesis (H₂)
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- Incidence rate in the last influenza epidermic was found to be 50 per thousand (5) of the population exposed. What should be the size of a sample to find incidence rate in the current epidemic if allowable error is 0.005 and 0.01?Researchers have reported that the incidence rate of cataracts may be elevated among people with excessive expo- sure to sunlight. To confirm this, a pilot study is conducted among 200 people ages 65–69 who report an excessive tendency to burn on exposure to sunlight. Of the 200 peo-ple, 4 develop cataracts over a 1-year period. Suppose the expected incidence rate of cataracts among 65- to 69-year- olds is 1% over a 1-year period. Problem a) What test procedure can be used to compare the1-year rate of cataracts in this population with that in thegeneral population?Problem b) Implement the test procedure in Problem a, andreport a p-value (two-sided).Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0 to 100, with higher scores indicating more inequality. At the extremes, a Gini score of 0 would mean that everyone in the country earns the exact same income, and a Gini score of 100 would mean that only one person in the country earns all the income. Some people argue that the larger a nation is, the more difficult it is to maintain a fair distribution of incomes. In other words, does income inequality increase as population size increases? You can test this question by conducting a bivariate regression on the data in the table below. Throughout calculating, and for the final answer, round to two decimals. ***Must show work on PDF for completing this computational table and for the following 9 questions*** Country (1) X: Population (in millions) (2) Y: Gini Score (3) (4) (5) (6) (7) Sweden 8 27 Ethiopia 77 29…
- Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0 to 100, with higher scores indicating more inequality. At the extremes, a Gini score of 0 would mean that everyone in the country earns the exact same income, and a Gini score of 100 would mean that only one person in the country earns all the income. Some people argue that the larger a nation is, the more difficult it is to maintain a fair distribution of incomes. In other words, does income inequality increase as population size increases? You can test this question by conducting a bivariate regression on the data in the table below. Throughout calculating, and for the final answer, round to two decimals. Country (1) X: Population (in millions) (2) Y: Gini Score (3) (4) (5) (6) (7) Sweden 8 27 Ethiopia 77 29 Switzerland 14 43 Laos 6 45 UK 58 35…Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0 to 100, with higher scores indicating more inequality. At the extremes, a Gini score of 0 would mean that everyone in the country earns the exact same income, and a Gini score of 100 would mean that only one person in the country earns all the income. Some people argue that the larger a nation is, the more difficult it is to maintain a fair distribution of incomes. In other words, does income inequality increase as population size increases? You can test this question by conducting a bivariate regression on the data in the table below. Throughout calculating, and for the final answer, round to two decimals. Country (1) X: Population (in millions) (2) Y: Gini Score (3) (4) (5) (6) (7) Sweden 8 27 Ethiopia 77 29 Switzerland 14 43 Laos 6 45 UK 58 35…Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0 to 100, with higher scores indicating more inequality. At the extremes, a Gini score of 0would mean that everyone in the country earns the exact same income, and a Gini score of 100 would mean that only one person in the country earns all the income. Some people argue that the larger a nation is, the more difficult it is to maintain a fair distribution of incomes. In other words, does income inequality increase as population size increases? You can test this question by conducting a bivariate regression on the data in the table below. Throughout calculating, and for the final answer, round to two decimals. ***Must show work on PDF for completing this computational table and for the following 9 questions*** Country (1) X: Population (in millions) (2) Y: Gini Score (3) (4) (5) (6) (7) Sweden 8 27 Ethiopia 77 29…
- An experiment is conducted to study the longevity of engine timing belts made of a new type of material. The experiment is run for a fixed time of 9 years. (Thus, the test is censored at 9 years). The sample results (in years) are 3.6 6.2 1.9 9+ 9+(where 9+ indicates that the timing belt was still in tact at the end of the experiment). What can you say about the ”average“ life span of one of these timing belts?Incidence reflects the likelihood of developing a disease among a group of participants free of the disease who are considered at risk of developing the disease over a specified observation period; prevalence involves estimating the proportion of people who have disease at a point in time. True FalseA female has a firstborn with a condition. The female's recurrence risk of a certain condition drops by 67 percent by taking a supplement regularly. 35 percent of females with recurrence are taking regular supplementation compared to 80 percent in women without recurrence. What will the female's risk in PERCENTAGE be of having a second child with the same condition?
- Delivery times for shipments from a central warehouse are exponentially distributed with a mean of 1.79 days (note that times are measured continuously, not just in number of days). A random sample of 102 shipments are selected and their shipping times are observed.Approximate the probability that the average shipping time is less than 1.48 days. Enter your answer as a number accurate to 4 decimal places.A sociologist wants to know the proportion of adults with children under the age of 18 that eat dinner together 7 nights a week. A simple random sample of 1, 122 adults with children under the age of 18 was obtained, and 337 of those adults reported eating dinner together with their families 7 nights a week. a. Describe the parameter of interest. b. Describe the statistic of interest. What value of the statistic obtained?State the null and alternative hypothesis for each question, then state the appropriate statistical tests for each question: The first thing the Chairman of the Authority is intrigued to know whether the average treatment cost of the recent epidemic’s patients is generally lower than that spent in treating patients suffering from epidemics, such as SARS, H5N1, and so on. Assuming that, overall, average treatment cost for each patient who committed epidemic is $18.73 thousand. Analyze the cost structure existing to the treatment of DIOVD-00 patients. In particular, the Chairman would like to know about the treatment costs of those patients who have had surgery. Do, and to what extent, the treatment costs of those patients with well condition and those who died after surgery vary much? In the same vein, do, and to what extent, the treatment costs of those patients who receive different surgery treatments?