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A biologist was interested in determining whether sunflower seedlings

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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 minimum height, Q1, median, Q3, and maximum height?

b) What is the sample mean height, standard deviation, and sample size?

c) What is the shape, measure of center and measure of the spread for the distribution?  

d) What is the null and alternative hypothesis?

e) Is this test a two tailed, left tailed, or right tailed test?

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