A paint manufacturer is experimenting with an additive that might make the paint less chalky. To ensure that the additive does not affect the tint, a quality-control engineer takes a sample from each of seven batches of Osage Orange.

Each sample is split in half, and the additive is put into one of the two. Both samples are examined with a spectroscope, with the output read in standardized lumen units. If the tint were exactly correct, the reading would be 1.00. Test that the mean spectroscope readings are the same for the two versions of Osage Orange. Let α = 0.05.

Transcribed Image Text:

Batch Without Additive With Additive 1.10 1.05 1.08 0.98 1.01 0.96 1.02 1.06 1.02 1.17 1.21 1.01 1.23 1.19 4