8) What is the percentage of players whose height is less than 68 inches? ( ns 9) What is the percentage of players whose height is greater than 74 inches? ( 10) What is the percentage of players whose height is between 66 and 72 inches?
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- An article was published concerning the incidence of cardiac death attributable to earthquake in Los Angeles County on January 17, 1994. In the week before the earthquake there were an average of 15.6 cardiac deaths per day in Los Angeles County. On the day of the earthquake, there were 51 cardiac deaths. Among days with more than 10 admissions, what proportion fall on weekends?It has been reported that 42.6 % of workers employed as purchasing managers are males. In a random sample of 200, 70 are males. Given this information; What is the sample proportion? What is the standard error of the sample proportion What is the population proportion?What size sample should be obtained to be 95% confident that the sample proportion will not differ from the true proportion by more than 2%?
- In the previous study done by a student, it was found out that 28.5% of the students used twitter. This year, your Statistics teacher wants you to conduct a study on the current percentage of Twitter users among the students in your school. How many students must you include in your study to be 95% confident so that the margin of error is no more than 3.5 percentage?In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism spectrum disorder. A sample of 900 children from Boston are tested, and 7 are diagnosed with autism spectrum disorder. Is the proportion of children affected with autism spectrum disorder higher in Boston as compared to the national estimate? Run the appropriate test at a 5% level of significance.55% of home owners who received Notice of Violations letters from their HOA experienced anxiousness, 76% of home owners who received such letters experienced outrage, only 2% experienced neither of the two aforementioned effects. What is the percentage of home owners who experienced both effects?
- The United States Census Bureau determined that the mean number of children in an American household is 1.86. Polls of 15 households were conducted in a certain city. 1) What is the number of degrees of freedom?Suppose you want to determine the mean number of cans of soda drunk each month by students in their twenties at your school. Describe a possible sampling method in three to five complete sentences. Make the description detailed.If a study determines the difference in average salary for subpopulations of mechanical engineers and civil engineers is NOT significant, then the subpopulations of mechanical and civil engineers are ________ different salaries. Guaranteed not to be earning Not earning Definitely earning Earning very
- What are companies’ biggest obstacles to attracting the best talent? Of 703 surveyed U.S. and Canadian talent acquisition professionals, 464 reported that competition for talent is the biggest obstacle at their company. At the 0.05 level of significance, is there evidence that the proportion of all talent acquisition professionals who report competition is the biggest obstacle to attracting the best talent at their company is different from 60%?58% of students entering four-year colleges receive a degree within six years. Is this percent smaller than for students who play intramural sports? 141 of the 277 students who played intramural sports received a degree within six years. What can be concluded at the level of significance of αα = 0.1 need to know what the number , pop mean and sample are, how do i get themA study is to be made to estimate the proportion of residents of a certain city and its suburbs who favor the construction of a nuclear power plant near the city. How large a sample is needed if one wishes to be at least 90% confident that the estimate is within 0.02 of the true proportion of residents who favor the construction of the nuclear power plant?