WebAssign -→ XCOD Let x represent the number of mountain dimbers killed each year. The long term variance of x is approximately o 136.2. Suppose that for the past 7 years, the vanance has been E 110.6. Use a 1% level of significance to test the daim that the recent variance for number of mountain cimber deaths is less than 136.2. Find a 90% confidence interval for the population variance (a) what is the level of significance? State the null and alternate hypotheses. O Ho: a - 136.2; Ht o > 136.2 O Ho: - 136.2; Hạ: o? < 136.2 OHại a- 136.2 H o 136.2 OHại a < 136.2; H: o 136.2 (b) Find the value of the dhl-square statistic for the sample. (Round your answer to two decimal places.) What are the degrees of freedom? What assumptions are you making about the original distribution We assume a normal population distribution. We assume a binomial population distribution We assume a esponential population distribution we assume a uniform population distribution () Find or estimate the PyValue of the sample test statiatic GPvalue 0.100 0.050Pvalue 0.100 0.025P-value 0.0S0

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.