Preliminary data analyses indicate that you can reasonably
consider the assumptions for using pooledt-procedures satisfied.
Independent random samples of 102 plots with cropland and100 plots with grassland yielded the given summary statistics for the number of native species. |
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Determine a 95% confidence interval for the difference between the mean number of native species in the two regions. |
HI, Please help with this problem (: ( can you also show me how you can do it the calculation on a TI-84?)
thanks!
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooledt-procedures satisfied. Independent...
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooled t-procedures satisfied. Independent random samples of 103 plots with cropland and 99 plots with grassland yielded the given summary statistics for the number of native species. Cropland: x bar 1= 14.62 s1=4.74 n1=103 Grassland: x bar 2= 15.89 s2=4.91 n2=99 The 98% confidence interval is from ? to ?
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 102 plots with cropland and 100 plots with grassland yielded the given summary statistics for the number of species of bird. At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of species in the two regions? Cropland Grassland x overbar 1 = 14.51 x overbar 2 = 15.33 s 1 =...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 103 plots with cropland and 99 plots with grassland yielded the given summary statistics for the number of species of bird. At the 5% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of species in the two regions? Cropland Grassland x overbar 1 equals 14.12 x overbar 2 equals 15.87 s 1 equals...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 104 plots with cropland and 98 plots with grassland yielded the given summary statistics for the number of species of bird. At the 55% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of species in the two regions? Cropland Grassland x overbar 1 equals 14.44 x overbar 2 equals 15.66 s 1 equals...
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooled t-procedures satisfied. Independent random samples of released prisoners in the fraud and firearms offense categories yielded the following information on time served, in months. Obtain a 95% confidence interval for the difference between the mean times served by prisoners in the fraud and firearms offense categories. Fraud 17.7 16.4 8.4 17.4 12.3 17.2 17.5 16.9 7.9 14.5 Firearms 15.9 23.5 18.2 12.4 22.2 24.4 24.1 9.7...
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooled procedures satisfied. Independent random samples of released prisoners in the fraud and firearms offense categories yielded the following information on time served in months. Obtain a 98% confidence interval for the difference between the mean times served by prisoners in the fraud and firearms offense categories Fraud Firearms 8 9 16 2 21.1 122 33 99 20.1 222 127 41 179 16.5 5.7 54 155 157...
Preliminary analyses indicate that you can consider the assumptions for using nonpooled t-procedures satisfied. Researchers obtained the following data on the number of acute postoperative days in the hospital using the dynamic and static systems. Obtain a 90% confidence interval for the difference, mu 1 minus mu 2, between the mean numbers of acute postoperative days in the hospital with the dynamic and static systems. (Note: x overbar 1equals7.75, s 1equals1.42, x overbar 2equals10.50, and s 2equals3.56) Dynamic 6 10...
fill in the blank is 1. is not/is 2. do not reject/reject and 3. provide/do not provide Question Help Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 102 plots with cropland and 100 plots with grassland Cropland Grassland x1 14.33x215.86 1 4.62 82-4.74 n1 -102 n2 100 ded the given summary statistics for the number of species of bird. At the 1% significance level do the data provide sufficient evidence to...
Chronic Remitted X2 = 20.4 Preliminary analyses indicate that you can consider the assumptions for using nonpooled t-procedures satisfied. Researchers randomly and independently selected 33 prisoners diagnosed with chronic posttraumatic stress disorder (PTSD) and 23 prisoners that were diagnosed with PTSD but had since recovered (remitted) x = 29.1 S = 5 S2 = 8 n = 33 = 23 n2 Obtain a 95% confidence interval for the difference, H1 - H2, between the mean ages at arrest for prisoners...
Please explain and show work clearly ???? Question Completion Status: QUESTION 1 Preliminary data analyses indica value approach or the P-value approach as indicated t you can reasonably consider the assumptions for using pooled t-procedures satisfied. Perform the required hypothesis test by using either the critical Aresearcher was interested in comparing the salaries of female and male employees at a particular company, Independent simple random samples of 8 female employees and 15 mate employees yielded the following weekly salaries (in...