Question
A chemist for a paint company conducted an experiment to investigate whether a new outdoor paint will last longer than the older paint. Fifty blocks made from the same wood were randomly assigned to be painted with either the new paint or the old paint. The blocks were placed into a weather-controlled room that simulated extreme weather conditions such as ice.temperature, wind, and sleet After one month in the room, the blocks were removed, and each block was rated on texture, shine, brightness of color, and chipping. The results showed that the blocks painted with the new paint generally had higher ratings than the blocks painted with the old paint. However,an analysis of the results found that the difference in ratings was not statistically significant What can be concluded from the experiment? A There is not enough evidence to attribute the higher ratings to the new paint. B The new paint will last longer than the old paint if used on wooden surfaces. C The experiment is inconclusive because blocks from only one type of wood were used.
Answer
4.2
(330 Votes)
Nerys
Professional · Tutor for 6 years
Answer
A. There is not enough evidence to attribute the higher ratings to the new paint.
Explanation
The experiment conducted by the chemist aimed to determine if the new outdoor paint would last longer than the old paint by subjecting wooden blocks to extreme weather conditions. Although the blocks painted with the new paint had higher ratings in texture, shine, brightness of color, and chipping, the analysis showed that these differences were not statistically significant. This means that the observed differences could be due to random variation rather than a true effect of the new paint. Therefore, we cannot conclusively attribute the higher ratings to the new paint based on this experiment.