STAT Statistics Project Example | Topics and Well Written Essays - 1250 words

STAT - Statistics Project ExampleFrom these results we reject the null hypothesis that the medium hotel price in Philadelphia is $129.50 since we have proven that the median(a) hotel room at Philadelphia is significantly different from $125 hence its not $ 129.50.Sample size = 250 and they believed that the average is 75%. It means that the confidence interval is at = 0.25. We calculate the sample mean as xbar= 250/168 = 1.488 and that the claimed average =0.75 thus t = 1.48-0.75)/Since the resultant Z statistic mental testing is less than the obtained value of (168/250) = 0.672, we reject the null hypothesis that there proportion of drivers under influence of alcohol are significantly less than 75%. We resolve that the proportion of drivers under the influence of alcohol is not less than 75%.Z = Sample mean- 0/ /n = 9-6 2.47/100 = 12.146. The critical value of Z is obtained from the tables as Z /2 = Z 0.05 /2 = Z 0.025 = 1.96. but since the assumed is greater than the test st atistic, we reject the null hypothesis that the mean postponement time will be 6 minutes or that its not true that the average waiting time will be reduced from the topical 9- 10 minute.Let us find out the critical value of chi-squared (2) = (n-1) s2 2 = (25-1)0.4 /0.3 = 32. This is the obtained chi-square and from the chi-square tables, we deduce the value of the critical region as 36.42 (Bowman par 3). Since its a left- tailed test, our rejection region is less than 36.42 i.e. (2