Question

A biologist was interested in determining whether sunflower seedlings treated with an extract from Vinca minor...

A biologist was interested in determining whether sunflower seedlings treated with an extract from Vinca minor roots resulted in a different average height of sunflower seedlings than the standard height of 15.7 cm at a 0.05 level of significance. The biologist treated a random sample of n = 33 seedlings with the extract and subsequently obtained the following heights:

11.5

11.8

15.7

16.1

14.1

10.5

15.2

17.0

12.8

12.4

17.5

13.5

16.5

13.5

14.4

16.7

10.9

13.0

15.1

17.1

13.3

12.4

9.1

14.3

12.9

11.1

15.0

13.3

15.8

13.5

9.3

12.2

10.3

a) What is the rejection rule for the hypothesis?

b) What is the test statistic value?

c) What is the p-value?

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