Please solve the questions and give the steps that will help me to understand .
ID: 3049148 • Letter: P
Question
Please solve the questions and give the steps that will help me to understand . Thanks!!5. A researcher is interested in determining if the model used for the distribution economic concerns in the year 2003 for residents in a certain county can the year 2004. A sample of 370 residents from that county was surveyed in following table displays the model for the distribution of economic coic 2003 and the observed number of sampled respondents in the survey for economic concerns for the year 2004 of main still be used in 2004. The for the year the same Economic concern I: Jobs 5% 25 2: Medical care 3: Higher 4: Housing Total Model from 2003 Counts in 2004 36% 138 education 27% 116 32% 91 100% 370 Let pi, p. ps, and ps be the proportion of all residents in this county who would list each of the economic concerns as priority for the year 2004. What would be the null hypothesis for a chi-square test for testing if the model from the previous year can still be used? C) Ho: p-0.05:p2-0.36;ps 0.27: pa 0.32 D) This cannot be determined from the information given. 6. There was a wonderful study conducted in 1898 by von Bortkiewicz, which provides data on the death of soldiers in the Prussian army from kicks by horses and mules. The data pertain to 10 army corps, cach observed over 20 years, for a total of 200 corps- years. The following table summarizes the observed data. Note that 109 corps-years had 0 deaths and 65 corps-years had 1 death, etc. Total 200 aths urrences 1009 Von Bortkiewicz felt that a distribution known as the Poisson distribution would describe these data well. Using that distribution, he produced the following probabilities Total eaths robabilities 0.543 0.331 101 0.003 Under the null hypothesis that the observed cell counts follow the specified distribution, what is the expected number of corps-years in which one death occurred due to horse or mule kicks? A) 66.3 B) 65.0 C) 33.1 D) 40 E) None of the above
Explanation / Answer
5
here as we are checking if 2004 has same frequency as in model for 2003 ' therefore null hypothesis
should be option C that all frequency in 2004 is same as in 2003 for models
6)
expected number of corp years for one deth =probability for 1 death *total ocurance =0.331*200=66.2
option A is correct
( pelase revert if any clarificaiton required)