Considerable effort has been expended to reduce the loss of potato crops due to

Question

Considerable effort has been expended to reduce the loss of potato crops due to soft rot. In an experiment each potato tuber is inoculated with bacteria, and the maximum diameter of rotted tissue is recorded after five days. Three factors are used in the experiment, each at two levels. The following results are obtained for Red Nugget potatoes.

Which factors have a statistically significant effect on the amount of rot on these potatoes

Choose the best answer from the following.

vi) Both iii) and iv) are correct.ct.

vii) All of i), iii) and iv) are correct.

i) The main effect for temperature and the main effect for oxygen impact the amount of rotting because their p-values are less than .05. Factor Temperature (TEM Oxygen (O Tuber treatment (TT Low Level 10 °C 2% Control High Level 16 °C 10% Rindite Replicate Desi R4 20 26 R5 10 27 R2 R1 13 26 15 20 13 TEM 19 24 18 24 10 21 15 17 16 18 18 10 17 10 18 15

Explanation / Answer

Option B is Correct

ii) The main effect for temperature and the main effect for oxygen impact the amount of rotting because their p-values are less than .05. In addition, the two factor interaction between oxygen and tuber treatment impacts the amount of rotting because it’s p-value is barely larger than .05.

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