21. Given the following contingency table for Hair colour and Eye colour, find the value of x. Ís there good association between the two ? Eye colour Hair colour Total Fair Brown Black Blue 15 20 40 Grey 20 10 20 50 Brown 25 15 20 60 60 30 60 150 Total
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- Answer this question using the contingency Table and probailities. Varaible 1 is Death trend Vraiable 2 is AdultVacTrendConsider that Roane county, which calculated that the average firm size (in terms of number of employees) is 150 with a median size of 50, while Anderson county calculated an average and median size of 230 and 255 respectively. Officials from both counties are asking their state legislatures for additional funds to accommodate their growing business size. Do you support their requests, why or why not? Also, are there any additional statistics you might ask for and why?Develop two research hypotheses: (a) one that would be used to examine differences between two unrelated groups and (b) one that would examine differences between two dependent groups.
- Consider the corresponding contingency table in a sample of patients from a hospital. There is the following table where the risk of heart attack is considered with respect to taking aspirin: What percentage of patients are at risk for a heart attack and take aspirin?The Bureau of Transportation reports on-time performance for airlines at major airports. JetBlue, United, and US Airways share Terminal C and Boston's Logan Airport. The percentage of on-time flights reported for a sample month were 76.8% for JetBlue, 71.5% for United, and 82.2% for US Airways. Assume that 30% of the arriving flights at this terminal are JetBlue flights, 32% are United flights, and 38% are US Airways flights. a. Develop a contingency table (table of joint probabilities and marginal probabilities). b. An announcement is made that Flight 1382 will arrive at Terminal C. What is the probability that the flight will arrive on time? c. Flight 1382 arrives on time. What is the probability that Flight 1382 is operated by US Airways? d. Flight 1382 will not arrive on time. What is the probability that Flight 1382 is operated by United?The human papillomavirus associated with the development of cervical cancer, genital warts, and some less common cancers. John Hopkins conducted a study to investigate the characteristics of female patients who came to their clinics between 2006 and 2008 to begin the three-shot regimen of vaccinations with the anti-human papillomavirus (HPV) medication Gardasil. A contingency table summarizing the vaccine completions by race for 1222 patients is provided below. 1.State the null and alternative hypotheses. 2.Compute the test statistic. Compute the test statistic. Document how the expected counts and the value of the test statistic are computed and enter them into the table and input box provided. Round the expected counts to 3 decimal places and the test statistic to 2 decimal places. 3.Compute the p-value. Provide the name of the distribution and the parameters used to compute the p-value. Then enter your anwer rounded to 4 decimal places. 4.Interpret the results of the significance…
- ______ are defined as the means in a table that represent a main effect. Group of answer choices Main means Marginal means Cell means Interaction meansBased on the Tukey Post-Hoc table (above), is there a significant difference between the text and video groups?Based on the Tukey Post-Hoc table (above), is there a significant difference between the text and phone groups? Based on the Tukey Post-Hoc table (above), is there a significant difference between the video and phone groups?Consider the corresponding contingency table in a sample of patients from a hospital. There is the following table where the risk of heart attack is considered with respect to taking aspirin: What percentage of patients who have suffered a fatal heart attack have taken aspirin?
- 7. The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision, the council asked the chief of police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported. The chief gathered the following sample information. City Police Number of Crimes City Police Number of Crimes Oxford 23 18 Holgate 24 9 Starksville 24 15 Carey 20 22 Danville 30 9 Whistler 19 24 Athens 33 11 Woodville 27 10 Click here for the Excel Data Filea. Determine the regression equation. (Negative amounts should be indicated by a minus sign. Round your answers to 4 decimal places.) b. Estimate the number of crimes for a city with 21 police officers. (Round your answer to the nearest whole number.) c. Interpret the…According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. A) Verify that nP0(1-P0)>10 and n< 0.05N (Assume the population sizes is N=40 million) B) State the appropiate null and alternative hypotheses. C) Indicate whether the hypothesis is left, right, or two- tailed.According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. D) Compute the test statistic z0. Round to the nearest hundredth. E) Draw a normal model with the area that represents the P-value shaded. F) Determine and interpret the P-value. What is the conclusion of the hypothesis test?
