Basic Statistics
CONFIDENCE INTERVAL FORTHE MEAN USING THE t DISTRIBUTION 85 7.4 CONFIDENCE INTERVAL FOR THE MEAN USING THE t DISTRIBUTION When t ...
86 ESTIMATION OF POPULATION MEANS: CONFIDENCE INTERVALS To find an estimate of the sample size needed for an interval of length ...
ESTIMATING THE DIFFERENCE BETWEEN TWO MEANS: UNPAIRED DATA 87 It is usual to assume in this problem that the variances of the tw ...
88 ESTIMATION OF POPULATION MEANS: CONFIDENCE INTERVALS the statistic XI - XZ has a normal distribution with mean p1 - pz and va ...
ESTIMATING THE DIFFERENCE BETWEEN TWO MEANS: PAIRED COMPARISON 89 has a standard normal distribution. Substituting sp for 0 give ...
90 ESTIMATION OF POPULATION MEANS: CONFIDENCE INTERVALS Table 7.2 Weight Loss (lb) Between Time 1 and Time 2 for Eight Adults Ad ...
PROBLEMS 91 In this example, the pairing of the weights on the same adult was a natural outcome of how the measurements were tak ...
92 ESTIMATION OF POPULATION MEANS: CONFIDENCE INTERVALS Give a 95% confidence interval for the difference between the mean weigh ...
REFERENCES 93 7.8 In an experiment reported in the Lancet on the effectiveness of isoniazid as a treatment for leprosy in rats, ...
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CHAPTER 8 TESTS OF HYPOTHESES ON POPULATION MEANS In Chapter 7 we presented the methods used in constructing confidence interval ...
96 TESTS OF HYPOTHESES ON POPULATION MEANS Table 8.1 Age of Walking for 18 Acyanotic Children Child Age (months) Child Age (mont ...
TESTS OF HYPOTHESES FOR A SINGLE MEAN 97 lower than 12.0 months. What must be decided is whether x is significantly different fr ...
98 TESTS OF HYPOTHESES ON POPULATION MEANS / I / I I 10 62 12 0 13 38 X (months) 3.35 0 3 35 z Figure 8.1 Two-sided test of HO ...
TESTS OF HYPOTHESES FOR A SINGLE MEAN 99 acyanotic heart disease children may learn to walk at the same average age as other chi ...
100 TESTS OF HYPOTHESES ON POPULATION MEANS acyanotic congenital heart disease children learn to walk at an older age than norma ...
TESTS OF HYPOTHESES FOR A SINGLE MEAN 101 State the statistical conclusion either to reject or fail to reject the null hypothes ...
102 TESTS OF HYPOTHESES ON POPULATION MEANS I 0 2.576A2.79 t Figure 8.3 One-sided test of HO : p 5 12.0. If a two-sided test is ...
TESTS FOR EQUALITY OFTWO MEANS: UNPAIRED DATA 103 8.2 TESTS FOR EQUALITY OF TWO MEANS: UNPAIRED DATA As a second example of test ...
104 TESTS OF HYPOTHESES ON POPULATION MEANS Table 8.2 Hemoglobin Levels for Acyanotic and Cyanotic Children Ac yanotic C yanotic ...
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