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1. Use the following data set to perform the t-test and determine p-values:
The data studies the effect of dietary calcium on blood pressure. In the experiment, one group of black male adults received calcium supplements for 12 weeks. A control group of black male adults was given placebos for 12 weeks. Earlier tests indicated that calcium could be more effective in the black population. The data are seated systolic blood pressure at the beginning and end of the 12 weeks measured in mm Hg. The data include the decrease after 12 weeks (a negative value indicates an increase).
If you choose to use the table for calculating the p value range, please also report what you calculated for t (or for F)!!!!!! Data from Lyle et al., JAMA 257:1772-1776 (1987)
Calcium Group
Begin End Decrease
107 100 7
110 114 -4
123 105 18
129 112 17
112 115 -3
111 116 -5
107 106 1
112 102 10
136 125 11
102 104 -2
Placebo Group
123 124 -1
109 97 12
112 113 -1
102 105 -3
98 95 3
114 119 -5
119 114 5
112 114 -2
110 121 -11
117 118 -1
130 133 -3
2. Use the direct method of standardization to compute the crude mortality rate and age-adjusted mortality rate for North Carolina in 2000. Use the U.S. population (also in table) as your standardizing population.
Age (years)
NC population
NC deaths
NC Age-specific rate (per 10,000)
US population
US expected deaths per age group
0-34
3,984,283
3,740
139,328,990
35-54
2,372,270
8,094
82,826,479
55-64
723,712
8,035
24,274,684
65+
969,048
51,863
34,991,753
Total
8,049,313
71,732
281,421,906
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This is perfect solution written step by step in MS word documents, the both questions having sub-parts are answered step by step, and included all the formulas and equations used in solution file. the question 1 is asked to determine t-test and determine p-values, the equations are given in sub-parts. The accurate answers are calculated for each question.
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