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Statistics questions - Assignment Example

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Alternative hypothesis: The incidence of crimes committed on full moon days was much higher than on all other days, new moon days, and seventh days after the full moon and new moon
(d) Statisticians have established that when there is need to compare two…
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Download file to see previous pages (a) From the box plot and the table presented, it is evident that the most deprived group exhibits the most variability in employment scale. An evaluation of the minimum and maximum value says it all. Similarly, the standard deviation backs the conclusion. It is evident that the minimum and maximum values for the least deprived and most deprieved are 1681, 3811 and 5000, 90780 respectively. The standar deviation for the least deprieved group was 649.67 while that for the most deprieved group was 20,388.
(b) Measure of central tendancy are used to give readers an overview about the data. In this paper, there is a huge difference between the mean and median for the most deprived group. This can be explained by the fact that there are outliers at both side, too large data and too small data. In order to best represent the center of the employment scale values for the most deprived group, I will use mean since the data is derived from a large sample size.
(c) Based on the findings above where the calculated t is in the acceptable region the null hypothesis is accepted at 5.0% level. Therefore, the percentage of adults supporting the healthcare law at the end of March is significantly higher than the percentage who supported the law in November
(d) There are a number of factors that contribute to significant changes in the findings of research that study the same issue using data from a sample derived from the same population. In this case, it was established that there was a conflicting conclusionarrived by two major polls. The major explanation can be on the wording used on questions to collect the relevant data. The AP-GfK poll provided respondents with three options support, oppose and neither support nor oppose. The other poll provided respondents with only two option, oppose and support. This usually gives different data hence findings. More importantly, the timing is another significant factor. Polls conducted before a ...Download file to see next pagesRead More
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