Neco 2020 Biology Question 22

Practice objective / multiple choice question 22 from the 2020 Neco Biology examination.

Neco 2020 Biology Objective / Multiple Choice Hard Difficulty
Question 22 NECO • 2020 • BIOLOGY • objective

An experiment was conducted to test the effect of a fertilizer on the height of a plant species. Five plants were grown without fertilizer (control) and their heights (cm) were: 12.1, 13.4, 11.8, 12.5, 13.0. Five plants received the fertilizer and their heights (cm) were: 14.2, 15.1, 13.9, 14.8, 15.3. Using a two‑sample t‑test assuming equal variances at the 5\% significance level, determine whether the fertilizer produces a statistically significant increase in plant height. State your conclusion.

Answer Options

Correct Answer A. Yes, the fertilizer significantly increases plant height (t = 5.33 > 2.306, reject H0).
B. Yes, the fertilizer significantly increases plant height (t = 5.33 > 2.306, fail to reject H0).
C. No, the fertilizer does not significantly increase plant height (t = 1.87 < 2.306, fail to reject H0).
D. Yes, the fertilizer significantly increases plant height (t = 2.10 > 2.306, reject H0).
Correct Answer
A
Correct Option:
Yes, the fertilizer significantly increases plant height (t = 5.33 > 2.306, reject H0).

About This Question

This is Neco 2020 Biology Question 22. It is one of the objective questions from the 2020 Neco Biology examination.

Difficulty level: Hard .

View More Neco 2020 Biology Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support