Question 5 An agricultural fertiliser producer claims that farmers using its brand of product Growstrong Advanced enjoy better growth than farmers who do not. The company claims that plants treated with this product grow to a height of at least 1.5 metres. A farmer decides to test this claim by treating 100 of her plants with the chemical. The mean height of these plants is 1.47 metres with a standard deviation of 0.22 metres. Test the claim made by about Growstrong using a 5% level of significance. [5 marks)