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champqc702
champqc702
11.12.2020 • 
Mathematics

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? There is not enough evidence to attribute the higher ratings to the new paint.

There is not enough evidence to attribute the higher ratings to the new paint.
A

The new paint will last longer than the old paint if used on wooden surfaces.

The new paint will last longer than the old paint if used on wooden surfaces.
B

The experiment is inconclusive because blocks from only one type of wood were used.

The experiment is inconclusive because blocks from only one type of wood were used.
C

The experiment is inconclusive because one month is not enough time for paint to weather.

The experiment is inconclusive because one month is not enough time for paint to weather.
D

Because the blocks were randomly assigned to the type of paint, there is evidence that the new paint causes better ratings than the old paint.

Because the blocks were randomly assigned to the type of paint, there is evidence that the new paint causes better ratings than the old paint.
E

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