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The assessment of diet is an important exposure for many disease outcomes. However, there is often a lot of imprecision in dietary recall. In one...

Test the hypothesis that the true Pearson correlation (p) is significantly different from zer0 [provide a p-value(two-tail].
The assessment of diet is an important exposure for many disease outcomes. However, there is often a lot of imprecision in dietary recall. In one study, 70- to 79 – year old women were asked about the preschool diet of their children (ages 2-4) using a food frequency questionnaire (FFQ). A unique aspect of the study is that simultaneous diet record data exist on the same children recorded in real time by their mothers when they were ages 2-4 and their mothers were 20 to 40 years old. Margarine intake assessed by two different recording methods (servings per week, [ n =12]). ID FFQ DR 340 7 0 399 7 0.5 466 0 0 502 0 0 541 0 0 554 7 2.5 558 7 3 605 7 0.5 611 21 3.7 618 0 2.5 653 21 4.1 707 7 8.5 Test the hypothesis that the true Pearson correlation (p) is significantly different from zer0 [provide a p-value(two-tail].
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Statistics and Probability  - 8201175.xls

ID FFQ
340
399
466
502
541
554
558
605
611
618
653
707 DR
7
7
0
0
0
7
7
7
21
0
21
7 0
0.5
0
0
0
2.5
3
0.5
3.7
2.5
4.1
8.5 t = r*sqrt((n-2)/(1-r^2))
0.447511 1.582453
table value = 1.812 Since...

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