Consider an Experiment in Which Shireen Measures 20 Arabidopsis Plants

question 43

Multiple Choice

Consider an experiment in which Shireen measures 20 Arabidopsis plants in a pasture that an agricultural company claims have an average height of exactly 23 cm. Her plants have a mean of 24.53 cm with a standard deviation of 2.33 cm, however. Based on her t-test statistic, which of the following best describes her conclusion?

• A) She fails to reject the null hypothesis of the t-test and concludes that the mean height of the plants seems to differ from 23 cm.
• B) She fails to reject the null hypothesis of the t-test and concludes that the mean height of the plants doesn't seem to differ from 23 cm.
• C) She rejects the null hypothesis of the t-test and concludes that the mean height of the plants seems to differ from 23 cm.
• D) She rejects the null hypothesis of the t-test and concludes that the mean height of the plants doesn't seem to differ from 23 cm.

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