(b) A nutritionist randomly divided 15 cyclists into three groups of five each. The first group was given vitamin supplements to consume with each meal for the next three weeks. The second group was instructed to consume a variety of high-fiber, whole-grain cereal for the following three weeks. The third group was instructed to consume their meals as normally they do. After three weeks, the nutritionist instructed each cyclist to ride 6 miles The following times were recorded in Table Q2(b). specific

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(b) A nutritionist randomly divided 15 cyclists into three groups of five each. The
first group was given vitamin supplements to consume with each meal for the
next three weeks. The second group was instructed to consume a specific
variety of high-fiber, whole-grain cereal for the following three weeks. The
third group was instructed to consume their meals as normally they do. After
three weeks, the nutritionist instructed each cyclist to ride 6 miles. The
following times were recorded in Table Q2(b).
Transcribed Image Text:(b) A nutritionist randomly divided 15 cyclists into three groups of five each. The first group was given vitamin supplements to consume with each meal for the next three weeks. The second group was instructed to consume a specific variety of high-fiber, whole-grain cereal for the following three weeks. The third group was instructed to consume their meals as normally they do. After three weeks, the nutritionist instructed each cyclist to ride 6 miles. The following times were recorded in Table Q2(b).
Table Q2(b): Time recorded for riding 6 miles
Vitamin group
Fiber cereal group
Control group
15.6 16.4 17.2 15.5 16.3
17.1 16.3 15.8
16.4
16.0
15.9 17.2 16.4
15.4
16.8
(i) Write the hypothesis that neither the vitamin nor the fiber cereal affects
the speed of a bicyclist.
(ii) By using 5% level of significance, test the hypothesis and conclude your
findings.
Transcribed Image Text:Table Q2(b): Time recorded for riding 6 miles Vitamin group Fiber cereal group Control group 15.6 16.4 17.2 15.5 16.3 17.1 16.3 15.8 16.4 16.0 15.9 17.2 16.4 15.4 16.8 (i) Write the hypothesis that neither the vitamin nor the fiber cereal affects the speed of a bicyclist. (ii) By using 5% level of significance, test the hypothesis and conclude your findings.
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